Sites that make Firefox sad.

If you don't see the frame on the right for easy browsing of the listed sites click: show frame.

The following is a list of sites that actively block browsers other than Internet Explorer or have some serious problem that prevents the site from being usable in Firefox.

Come on people! Its 2007 already, NOT 1997! Get with this century! There is no excuse for these kinds of sites!

Click on the links to these sites in Firefox, Opera, Safari, or any other non-IE browser and they will appear in the frame to the right. On the slim chance the sites properly monitor their browser usage perhaps they may realize they need to fix their pages to accommodate their viewers.

Please note: I only occasionally update this page so some sites may have been fixed or disappeared since I last updated this list. I have no idea what some of these pages are, they are not sites I personally visit. I found most of these from the Mozilla Reporter, in bugzilla, or by searching Google for stupid stuff like "We only support Internet Explorer".

This is by no means a complete list, there are far too many sites that only work properly in IE for one dumb reason or another. And many of the worst offending pages are buried deep inside sites, inside password protected areas, or on intranets.

Here is a sample of what Firefox is up against: A Glimpse in to an "enterprise" Intranet

Web designers or people purchasing web based products, especially for businesses,  have to be really rock stupid or insane to discriminate against popular browsers such as Firefox, Opera, or Safari. As of this writing it is not uncommon, depending on type of site, to have 5%-25% of visitors use something besides IE. Turning away even one percent (that is one out of every one hundred!) of your customers just because of the type of browser they have chosen is a very bad thing to do. Try turning away one percent of your customers at a real brick and mortar business for whatever reason and see what happens!

Additionally, due to the Homeland Security CERT advisory recommending the use of other web browsers, Internet sites that require IE could be interpreted as supporting terrorism!

Despite all of that, if you choose to send e-mail to the web masters please do not flame them, send something constructive like the Mozilla Site Evangelism Letters

Actively block Firefox:

http://www.walmart.com/swap/SwapEntry.do?dslURL=/swap/LoadMain.do&closeWindow=false&isBuyCD=false (walmart music downloads) " We notice you're not using Internet Explorer...." Yea dumbasses, there is a reason for that.
https://www.walmartbenefits.com/MyBenefitsRegistrationWeb/mybenefits.jsp (Ohhh, we think you should use IE.... does let you continue and mostly works. Walmart is now owned by Microsoft I guess.)
http://www.connect-europe.com "We have performed a system check and detected that you need to download and install [...] Microsoft® Internet Explorer 5.5+" Funny, it even says that on my Mac. I don't think they checked hard enough.
http://www.connect.com To get these guyses music you have to use the obsolete IE 6 browser and your choice of the lovely Microsoft brand Windows 2000 or Microsoft brand Windows XP. And holy camel poo they let you use the wonderful Microsoft Windows ME also!
http://www.movielink.com/ This site finally lets you browse their content with Firefox, but the movie "rentals" still requires IE and Windows as their error page explains. As if anyone would want Digital Restrictions Management encumbered videos anyway.
http://play.toontown.com/ This is just sad, especially because is it is mostly just flash anyway!
https://www.sedona.bz/To access SEDONA, you must use Internet Explorer!
http://www.howdidido.co.uk/ (I think there is some evil coding in this site)
http://www.hubbellcatalog.com/ "You must use Internet Explorer to view this site", excuse me assholes, but I don't have to view your site at all.
http://nom.mlxchange.com/ Specifically designed for IE because they must love bill...
http://www.mlxchange.com/ Same thing I guess.
http://h41209.www4.hp.com/euserv/jsp/ErrorCannotContinue.jsp?error=br Whatever....
https://www.hostilespace.com/ Well, it does say they are hostile....
http://www.englishtown.com/master/register/ Must use IE and Winders..
https://www.lojackforlaptops.com/login.asp "Unsupported browser detected!" Look out, we think your brand new browser is crap!
http://gameadvisor.futuremark.com/ IE 6 is simply required... DON'T DO IT! (I didn't think you would)
https://www.mytravelmoney.com/ "The view this site you must use Internet Explorer 5.0 or later.", Uh... no.
http://public.lifesaving.com.au/index.cfm?objectid=94E38899-C298-99DD-C9D547DBE479E350 "This page is only viewed with IE 5+" So? You think people are going to use that old IE forever?
https://secure.premiumretail.com/employees/browser.asp Site requires IE... yada yada, at least they say IE is downloadable for "no charge" rather than "free".
http://www.yini.org.uk/OnlineApp.asp My opinion is a brain-dead badger could make a compatible web site.
http://rd1.surfernetwork.com/Player1.asp?call=kbxr Enough with the requiring IE already! Doesn't anybody know how to design a site right? Hopefully it just the relatively few bad seeds you see here.
http://neptune.com/ Ah, more ActiveX straight from the 1990s!
https://www.nationalcity.com/secure/personal/autoenroll/detect.asp?link=apply (works with NS 7, blocks mozilla/firefox)
http://www.nctraining.ncgov.com/main/main_technical_requirements.htm Netscape NO!
http://sports.yahoo.com/ncaaf/gamechannel (Those yahoos require IE and Winders!)
http://cora.nslc.org/cora/Home/login.asp (another retarded app that is MSIE only!! On order to use this application you only have to upgrade to an ancient, obsolete browser that is light-years behind what you are currently using!
https://www.nysif.com/FROI/default.asp ("You are using Netscape." Yes, I am... " Click Here To Download IE..." No, I won't).
https://secure02.mgm-mirage.com/ATS/ATS_Online ("Browser Error"? Internet Explorer is the error...)
http://www.microsoft.com/msdownload/platformsdk/sdkupdate/downlevel.htm
More microsoft requirey goodness "You can download the latest Internet Explorer for free" (If you have purchased an overpriced version of Windows and activated it with Microsoft)
https://register.btinternet.com/cgi-bin/load_page?page=/selfhelp/chperspwd.html "Browser Upgrade Required"??, they mean "downgrade"!!!!
http://www.tlcshoppe.com/ "Please access this site using Internet Explorer available free from Microsoft.com" Forget Mac, Linux or people wanting to run modern web browsers.
http://www.sheet80.org/ This old, broken poorly coded web site requires IE 5 or higher (IE is very high) for it to work properly.
http://zone.msn.com On-line games will only work with IE, courtesy of our good friend Bill Gates
https://www.my-benefit-info.com/ ("this site will not work with any version of Netscape Navigator." or any other modern browser apparently)
http://www.ftcres.com/ "this page requires IE 4 or newer" and app does not load in my newer Firefox browser
http://www.epclaw.com/login.asp Requires IE 5.0 or higher because we hate you...
http://www.gmaa.asn.au/create_user_account.cfm The GMAA is the nationally recognized Professional Association... I'm sorry, professional and requiring IE just don't go together.
http://demo.safemeasures.org/ Site requires IE 4 or higher to run (It's true, IE 4 will make you run screaming)
http://www.mlab.uiah.fi/~marjaana/ "This site requires Internet Explorer 5.5 or higher. Please, check your browser." Hmmm, I checked my much higher Firefox and it seems perfectly OK to me.
http://sef.mlxchange.com/ ("Your browser version is not supported." *Sigh*)
https://www.mybenefitexpress.com/ "To use mybenifitexpress.com you must be using MSIE 5.0 or better" Well, then I must be in good shape because Firefox is much, much, much, much, much (repeat to infinity) better.
http://us.mcafee.com/root/mfs/default.asp?cid=9914  (Freescan requires you to use IE with Active X, which is probably how you got the virus in the first place!!!!)
http://sajdl.tripod.com/i_intro.html "Sorry, but your browser is in the 10% category The category with name: Unsupported" So 10 percent of over a billion is some tiny number that can be ignored!????
http://www.a2zpattaya.com/ Ohhhh. I'm excluded from viewing this site... there must be something wrong with me.
http://www.costar.com/ Wants you to install IE to use their products (look in the upper right).
http://www.telmastaal.com/(dosn't load flash right in moz/firefox)
https://www.careermapping.com/ As always they expect you to use IE.... sigh.
http://www.racewarkingdoms.com/index.html For "full compatibility" (with poorly written crap) use IE...
http://www.fdms.com/ns_win.asp People....
http://marktheworld.com/click the order link, says it wants IE because of features in it's "real-time" design. (ROFL) Says they are planning to support Netscape... Nothing about Firefox which is what everyone uses these days.
http://www.riffinteractive.com/Download/SetupOther/tabid/71/Default.aspx Lessons only work in IE. Some lesson!
http://www.asia.ccb.com/hongkong/english/browser.html Only "Supports" IE 5.5 and above.  ("Netscape is not supported. Macs running IE are also not supported." Chocolate Pudding is not supported... Oversized hair dews are also not supported... )
http://www.aimglobal.org/members/public/companysearch (Allows Firefox but blocks Mozilla Suite and Seamonkey)
https://docstore.kinkos.com/ Works with FF now, but warns with Moz/Seamonkey and then they only recommend IE and Netscape. At least they let you continue anyway.
https://edecs.fws.gov/ eDecs has been optimized by a bunch of brain dead chimpanzees to with with MSIE... hail Bill.
http://www.mytricare.com/internet/tric/tri/tricare.nsf Bad browser detection. click on "register" and it says it wants IE or Netscape 6.2.
https://secure.ubi.com/billing/ Demands that you use IE or Netscape and even say you have to use certain OSes. What do they care if I am running, say, OS/2 as long as the browser works?
http://www.torontomls.net/ MLS has sent one CD with Microsoft Internet Explorer version 6
to each MLS office complete with borg implants...
https://ebpp3.wellsfargo.com/ds/WFF Upgrade your browser? I already did, jerks! Only allows Netscape 6/7 or IE.
http://www.cinemanow.com/Free/1003,0,5,,1,7,18051/Wind-Dancer.htm "You must use Internet Explorer Version 6 or higher on a PC running Windows 2000 or later to use this service" - You must bang your head against a wall very hard.
http://www.globalknowledge.com/training/generic.asp?pageid=133 Virtual classroom requires IE.
https://www.employereservices.com Says it works with NS 7 or IE 5+, but blocks Firefox. Oh, and "The Macintosh Platform can not support our site."
http://www.careers.nestle.com/BrowserTestSearch.asp "If you received this message, it may be that your Browser is not supported." - Or it may be that your site is a piece of shite. You ever think of that? Hu? Hu?
http://www.blackberry.com/GoogleTalk/index.do Uses obsolete ActiveX junk. And Google is somehow involved with this?!?
http://homesecuritysolutions.com/assets/tutorial.htm More powerpointless crap. Isn't this site something about security? So why do they do this?
http://www.screensavers.com/Home/3-D/Fantasy/Fantasy/3D+Flying+Toasters/index.html Clicking the download link says you have to use IE to download: Since when has just downloading required a certain browser? Warning: probably spyware since it so heavily says it isn't.
http://www.tele2.no/bedrift/nettbutikk/?ref_link=sl_mobshop "Sorry, this page is not supported by your browser" So there is something wrong with my browser, is that what you are saying?
http://www2.dsm.com.qa/GeneralInterface/LiveQuotes/Streamer_en.html Says it wants IE or greater. What is so great about IE to start with?
https://partnersource.imarketsource.com/ Ancient unupdated web app, yet another "we do not support your browser".
http://shop.allpcinc.com Wants IE.
http://www.firstdirect.com/internetbankingplus/internet_banking_plus.shtml Clicking "Register Now" says internet banking requires IE on Win2k/XP with ActiveX turned on - I can understand that for Digital Restriction Management infested videos but internet banking? What do they need that for?
https://www.sovereignwebmortgage.com/ - Another site that is only compatible with IE.
http://www.farlink.com/ This site only "supports" IE.
https://boveda.banamex.com.mx/ Wants IE or Netscape only.
http://www.accesselectronics.com.au/ IDs browser and says "You are not currently supported"
http://www.asianage.com/ Site reports "This page can only be seen in IE" and then recommends installing a Firefox user agent switcher!!! That is seriously messed up! They cant just fix their site because... why?
http://tamilsongs.allindiansite.com/kadhal.html clicking "play all" reports "please use internet explorer to listen to songs"
https://e-access.compassbank.com/ibscompass/cmserver/upgrade.cfm?brwser=6.2&sslencry=128&vers=5.0 -Says Firefox is out of date?!?
http://www.subprofile.com/ clicking on any links results in "We have detected that you are not using Microsoft Internet Explorer..." Uh really?
https://www.nysif.com/froi/default.asp "You are using Netscape" (Uh, no I'm not) This application needs Internet Explorer 5.5+. Your web developer needs a brain.
https://cora.nslc.org/cora/Home/login.asp Frames:  Not Supported Tables:  Supported Client Scripting: Not Supported Keeping web site up to date: Not supported. Please upgrade your brand new Firefox browser to IE 4.01!
http://sports.yahoo.com/ncaaf/gamechannel "In order to use the new college football GameChannel, users will need Internet Explorer 5.0 or higher and a Windows operating system."
http://www.nctraining.ncgov.com/main/main_technical_requirements.htm "Netscape NO!"
http://neptune.com/ - Uses obsolete ActiveX.
http://www.bitdefender.com/scan8/ie.html Another online virus scanner that wants to use IE (how do you think you got it in the first place!?)
http://uk.europe.creative.com/support/downloads/softwareupdate.asp Requires IE. Says it doesn't even work in Vista! Obviously this kind of software auto update is stupid and doesn't work, so why even keep it around?!?!
http://www.onlinesalescentral.com/ Says it is designed for IE.
https://pep.ipaper.com/ Requires specifically IE 6 SP2 (What do you mean I require a lobotomy to use your site?)
http://www3.ca.com/securityadvisor/virusinfo/scan.aspx Requires IE on Windows to work "Normally" - Is this some new definition of "Normal" I am not aware of?
http://all-access.cstv.com/cstv/player/player.html?code=ncaa "But you will need Microsoft Internet Explorer 6 on the following systems in order to enjoy All-Access:" I most certainly would not "enjoy" this with IE shoved up my ass..
http://www.three.com.hk/appCS/eng/login.jsp "To better safeguard user security, only Microsoft Internet Explorer browsers can be used to access 2 Hong Kons's online customer service applications." IE? Security? What are these people smoking? Socks?
http://musicstore.songtouch.com/ Wants Firefox to download some ActiveX plug in to they can infest your machine with Digital Restrictions Management (DRM) crap. Site refuses to work on Mac or Linux of course.
https://myonlineaccounts2.abbeynational.co.uk/CentralLogonWeb/Logon?action=prepare "Unsupported Browser"
http://www.tlcshoppe.com/ - Just outright requires IE for whatever reason.
https://peoplefirst.myflorida.com/ On right: "This browser is not supported." - People first my ass.
http://www.drvtech.com/webinar/template/browsertest/conftest.html "Error - Unsupported Version of Netscape"
http://www.plexus-online.com/ "Only Internet Explorer is allowed for Plexus online" If only breathing were only allowed for people with common sense...
https://conference.oracle.com/imtapp/console/imtPlaybackConsole.jsp - "Playback requires Internet Explorer" WARNING! THIS LINK MAY CRASH FIREFOX! I would expect more from Oracle, except I know their most favorite word is "desupport".
http://www.consumerinput.com/panel/registration.csp?panel=poppy They apparently don't want your input since they require IE.
http://customercare.mtnl.net.in/ "Your browser does not meet the minimum specifications for viewing this site." Browser Version: 5.0 - Evil: False - Piece of junk: False
http://www.pcpitstop.com/vistaready/test.asp This is a Vista readiness test. It test that you are a loyal Microsoft ass kisser by making sure you are running IE.
http://www.barclays-skills.com/telegraph If you are not a loyal Microsoft ass kisser, this training material might help - it is only accessible in IE.
http://www.mindleaders.com/support/ The real guilty party for the above web site.
https://wca.eclaim.com/   Another leftover from the 1900s that requires IE.
https://jobsearch.unicru.com/JLohome.aspx?rscid={8e517c89-7a6d-c98a-e001-9f3a96339c04}&RP=CR Seems to work in Firefox but barfs if it detects you are using anything other than Windows 98, 2000, or XP.
http://bv.officemax.com/max/solutions/services/CopyMax/launchXMContent.jsp?BV_UseBVCookie=yes&linkName=theProduct&linkToWizard=RubberStamps "For this functionality please use Microsoft Internet Explorer version 5.0 and higher" - Forget it pal.
https://secure.bsneny.com/online_services/nenymember/nenymembLogin.asp?catg=memb "To use Online Services you need  Internet Explorer." and a lobotomy.
http://sun.airmedia-inc.com/ Java powered but doesn't work in Firefox?
http://www.myhomeequity.com/PreQual/?sc=67&utm_source=cmi&utm_medium=adprequal Says it is not compatible and oh so helpfully redirects you to Microsoft's assimilation page.
http://www.topjob.com.br/  Says it wants IE.
http://www.subservientprogrammer.com/main.aspx  - ActiveX warning
https://myonlineaccounts2.abbeynational.co.uk/CentralLogonWeb/Logon?action=prepare The first time you load it says your browser is not "supported". (Oh, I just don't get enough of that word!!) It lets you continue as it seems it was developed for IE and the old Netscape 7.x.
https://retailer.echostar.com/ - Displays garbage in Firefox and elsewhere says it requires IE - which is also garbage.
http://www.apollosindhoori.com/ - This wonderful piece of trash site has illegal backslashes in the file names and otherwise says it requires IE.
http://gameadvisor.futuremark.com/gameadvisor/service/ "Windows XP Game Advisor requires the use of the Windows 98/ME/2000/XP operating system and the Internet Explorer 6 browser." Hmmmm.... I wonder why?
http://onecare.live.com/site/en-us/scanner/ Requires IE, of course. What did you expect from Big Brother Bill?
https://home.membercenter.office.microsoft.com/Signup15/Default.aspx?sku=EssentialsTrial&signupsrc=FreeTrial_Top&partner=OL&lc=en-US More fun from our good friend Bill. Incidentally, this "Office Live" shit is mostly ActiveX, so it isn't a real web app, it is just another fancy Win32 app.
http://all-access.cstv.com/cstv/player/player.html?code=bay "You need to be running Microsoft Internet Explorer" - in the same way you need to have your legs crushed.
http://www.bimbo.com/ we no el suporto your browsero.
https://www.employereservices.com/ no eSupport for eServices. That eSucks.
http://www.medimax.it/ Wants IE for Mac or PC. They obviously don't know MS put IE for Mac to death a long time ago.
http://www.runaware.com/microsoft/en-us/office2007/td Yet another Office 2007 test drive thing (Win32/ActiveX)
http://www.betshopitalia.com/Index.aspx More IE lovage.
http://www.staples.marktheworld.com/ Clicking on any of the options returns a message that says the site requires IE because of "advanced features" in IE. I'm rolling on the floor laughing.
http://www.carrefour.net I'm starting to get sick.
http://www.agentcenter.com/ "This system requires Internet Explorer v5.5 or higher." The blue "e" is asking you if you want to get high.
http://www.sencore.com/Sweep/SL754D/SL754D_files/frame.htm More IE-Only PowerPoint drek.
http://activedaily.readingeagle.com/Daily/client.asp?skin=ReadingEagle "Your browser environment is not fully supported. Do you want to continue anyway?" Your pants are not fully supported. Go ahead and continue and see what happens.
https://www.giftcardbalance123.com/ "Internet Explorer is required to access this website." - and your hard drive.
http://premier.dell.co.jp/Premier/Include/Errorb.asp
http://www.hangame.co.jp/ I believe the word is "baka".
http://www.symantec.com/home_homeoffice/support/index_ts.jsp Another site that says it needs IE. And this one, I think, really does access your hard drive.
http://www.secuser.com/antivirus/index.htm - Unable to load the ActiveX control. Well, where I am from that is a GOOD thing.
http://carelink.minimed.com/ Now this just disgusts me, some medical thing and they require IE.
http://www.law-economics.net/home.asp?lingua=ENG "This site is designed for Microsoft Internet Explorer/Netscape" and was designed in 1996 by a herd of rabid apes.
https://www.lojackforlaptops.com/customer/login.asp Lojack for laptop require flop because we have flapjacks for brains.
http://lava5.deschutes.org/mox5/indexpublic.cfm?&action=Login Requires IE *AND* for added insult uses obsolete popups so it tells you to turn of *ALL* popup blocking. Sites like that - even ones that work in Firefox - need to die. You NEVER want to tell a user to do that! If you must then instruct them how to enable popups for just the specific site, but enabling popups just about makes the web unusable these days.
http://www.elgin.gov.uk/index.cfm?fuseaction=... Says they are working on getting Firefox 1.5 working.
http://www.hardyorchids.co.uk/ AAAARRRRAAAGGG!!!! Wrong mime types again! Why is this so freaking hard for people to get right?! And why does MS insist on interpreting them WRONG and displaying files clearly marked as "text" as "html"!
http://www.binayled.com/index.shtm More mime type stupidity.
http://jwc.scau.edu.cn/ And yet more!!!
https://www.mytravelmoney.com/ "To view this site you must use Internet Explorer 5.0 or later." Oh must I, almighty web king?
http://www.uic.edu/jaddams/hull/urbanexp/ "This site is optimized for Internet Explorer" Oh, and that means what exactly? Artificial web page substitute?
http://www.pianetasalute.com Browser, IE, yada yada.
http://www.mundointeiro.com/Default1.aspx More trash, haul it of please.
http://www.housing.umn.edu/applying/step1.php "Only Firefox 1.0 is supported by this application." Uhhh, how in the heck did they manage that?
https://pcws.wal-mart.com/cws/seeker.html Walmart really doesn't like Firefox does it?
http://datawarehouse.hrsa.gov/DWOnlineMap/MainInterface.aspx Map tool only works under IE 6 - if you don't like it, call 1-800-EAT-SHIT.
https://accounting.quickbooks.com "You need a different operating system or browser" no, we need another web site that does what you do but better.
http://www.holidayapartments.co.uk/include-pages/currency-calculation1.htm This page requires the Microsoft Office Web Components. This page also requires Microsoft Internet Explorer 5.01 or higher. Oh, and this page requires someones nuts to be kicked.
http://www.ultimatebaseballonline.com/member/myubologin.asp "This site is only compatible with Internet Explorer 6.0 or above" Apparently this site is not compatible with this century.
http://www.netflix.com/WatchNowMessage?msg=51 (LOG IN REQUIRED!) The "Watch Now" feature only works in IE. it's DRMed garbage anyway.
https://www-307.ibm.com/pc/support/access/aslibmain/aslib/asDetect.jsp?action=launch&row=2 Supported configurations include Microsoft Windows running Microsoft Internet Explorer 5.5 while bending over.
https://www.lasuperiorcourt.org/efiling "This site requires an Internet Explorer browser that supports JavaScript and cookies." Cookies sound good, but that Internet Explorer part doesn't. Oh zark, I think I'm going to puke.
http://simcity.ea.com/play/simcity_classic.php Sim Shitty classic requires IE. Ironic thing is Simcity 2000 had native ports to DOS, Windows 3.1, Windows 95/NT, MacOS, IBM OS/2, Amiga and more.
http://www.dot7.state.pa.us/itms/default.asp Wants IE 4 or "greater" Need I mention again that Firefox is infinitely greater?
http://www.dot7.state.pa.us Site wants IE and popups to bring back the browsing experience of the 90s!
http://www.dot7.state.pa.us/ividlog/ "This application requires IE" Originating site for these apps here. Hey, weren't these they guys who had that bridge collapse and kill a bunch of people?
http://www.empirehealthcare.com/webapp/EmpSP/NewProviderService/9-4946074194514742848/check_browser
"Please use Microsoft Internet Explorer version 5.0 or higher with 128-bit encryption to access Physician Online Services." Speaking of injuries....
http://www.hubbellcatalog.com "You must use Internet Explorer to view this site." Or better yet I won't view the site at all.
http://www.pulsetrain.com/solutions/application/pulsar_web.htm Click "experience pulsar web now" on the right, enter info (accepts anything) to continue with a login, and you get "Your browser is not supported. Please download the latest version of Microsoft Internet Explorer from www.microsoft.com" BTW, my browser is plenty supported.
http://www.pocketpc.com.hk/ Something or other Internet Explorer 5.5...
https://www.princesasupermercados.com.br/ Internet Explorer 4 or stupider.
http://www.mymathlab.com/installwiz.html Click something and select "submit" and you get "This course is not compatible with Firefox. Please use a supported browser. We recommend Internet Explorer 6.0" Hey jerks, Firefox is plenty supported. YOU are not supported.
http://toefl.startpractice.com/cart.aspx?program=TFP "The site requires Microsoft Windows 98, NT, 2000, XP, or 2003. Browsers supported include Internet Explorer 5.01 or later and AOL 6.0 or later. All speaking products require Internet Explorer 6.0." Be sure to say "Firefox rules you freaking pigs!"
http://friendlyfiles.net/dw_lv/eebeca12897/Redline2007.By-iiLiDan.www.theultimates.us.rmvb.html Says "to download this file use "Internet Explorer"" I wouldn't actually try that though.
http://www.pepsico.com/PEP_Careers/JobOpportunities/index.cfm Bad browser detection. Knows about Mozilla but not Firefox.
http://fdms.com/ "This web site requires the use of Internet Explorer ONLY" Only mindless butt-eating zombies allowed.
http://msnlttab.englishtown.com/master/register/#3 "We're sorry but you must be using Microsoft Windows and Internet Explorer version 5 or above in order to view our site properly." If you are so sorry, then why don't you FIX it?

Inaccessible in Firefox:
http://www.coldplay.com/forum.htm (junk in HTML)
http://www.intranet.remax.co.za/?page=login&help=register
http://webfx.eae.net/bombProject/bomberman.html (blank)
http://www.gbqc.com/html/intro.htm (The gpqc - they do nothing)
https://www.travelport.net/login.aspx Displays nothing in FF or Moz.
http://www.planning.cityoflondon.gov.uk/mapping/map/map_detailview.aspx?module=P1 Map does not work in FF (needs "specific javascript functionality")
http://www.oshealtd.com/ Linked pages have wrong mime type. Not to mention the huge BMP file in the middle of the page!
https://esp.rci.rogers.com/ Gives some odd error when accessed with Firefox.
http://www.pcdf.df.gov.br/sistemas/dp_virtual/default.asp complains about wanting IE 4 or later.
http://www.autoescaner.com/ Links on page don't work
http://www.restaurantecoruna.com/ Layout is totally messed up.
http://www.squibphotography.co.uk/ - In Firefox says there is an unidentified scripting error and the page does not load.
 http://www.princesrisborough.com/ - Illegal backslashes in the URLs.
http://www.eskanderpartners.com.au/ - I duno, I can't imagine this site working in any web browser.
http://www.telepizza-online.com/Internet/Login/login.aspx Doesn't work in Firefox, it should show a login.
http://www.brotherhoodteam.com/index2.html I duno, but it loads in Opera.

Page problems with Firefox:
Note: some of these sites may look right at first but have non-functional drop down menus that render the site partially or completely unnavigatable in Mozilla or some other feature that is IE only. All it takes is one page that doesn't work right in anything but IE to make a person switch back to IE. It is almost too bad Mozilla folks won't stoup down to the same level.

http://www.spa.ga.gov/ (agency services menu borked up in Firefox and opens behind flash)
http://www.musicalacarte.com/ (says it needs IE, actually requires popup)
http://www.xonics.com/index.html (Entire page blinks!, at the bottom it says it needs IE)
http://www.duracite.com/ (junk at top)
http://www.eddiebauer.com (drop down menus don't work)
http://www.balloonsafaris.co.uk/ (menus don't work)
http://www.syracuse.com (menus don't work)
http://www.rbi.org.in/rbisectiontoc.html (menu doesn't work)
http://www.w3schools.com/wap/tryit_wap.asp (vbscript)
http://www.natwest.com/ (menus)
http://www.hekticmedia.com/ (menu)
http://www.ci.berkeley.ca.us/ (menu)
http://lt.telebasket.com/forum.asp?PageNum=1&id=12 (no menus)
http://www.ebnews.com/ (menus)
http://www.siu.edu/~rehabbat/autismoverview.html (more IE only powerpoint)
http://sps.k12.mo.us/khs/science/earth/class_files/5-28-01.htm (Power pointless presentations for IE only)
http://www.fractals.com/ (backslashes in urls)
http://www.apexhomeinspection.com/ (garbled on Mozilla)
http://www.inventivemarine.com/ (junk on top of page)
http://www.gscusa.net/ (logo doesn't appear or appears in wrong place)
http://www.ericorson.com/ (bitches about wanting IE)
http://www.iespana.es/animeenthropy/ (spanish. crappy site, says it wants IE)
http://www.geocities.com/Colosseum/Sideline/5984/ (says it has active x, don't see where it does)
http://www.woodbuffalo.ab.ca/library/library_catalogue.htm (page says it requires IE 6, but seems to work?)
http://evisaforms.state.gov/ Page says Firefox does not appear to meet the minimum requirements, but seems to work.
http://www.silkroadonline.net/gameinfo/sk_wpmastery.asp?wpMastery=WpmHscb (Series links don't work)
http://games.yahoo.com/games/downloads/bo_msgr.html "My High-Score: Requires IE 4.0 or later."
http://www.medtraining.org/corpsite/ Some graphics overlapping text.
http://www.thebrightsparkshome.com/BSIG/default.aspx Various lout on many of the pages is wrong.
http://www.aarpfunds.com/content/resource/content.cfm?id=ira_trad_roth (text overlaps)
http://mail.yahoo.com/ (Works with Firefox finally but gives other non-IE browsers a crippled "plain text only" mail composer page -their new "Beta" also excludes certain OSes for no explained reason, even though Firefox runs fine on them)

If you want to find out what some of these sites really mean when they say they don't "support" your browser you may want to visit my translation of these stupid web pages.

Also for a more up to date database of sites that neglect Mozilla see the Mozilla Reporter.

Back to Mozilla Kicks ass!