Twitter is all a-tweet about this news:
Internet Explorer has long been the bane of many Web developers’ existence, but here’s some news to brighten your day: Internet Explorer 8, 9 and 10 are reaching ‘end of life’ on Tuesday, meaning they’re no longer supported by Microsoft.
Just because Microsoft stops supporting these things does not mean you can stop designing, developing, and testing for these old versions of IE on Wednesday.
When you’re thinking about browser compatibility, you have to judge based on actual market share and your user base’s browser statistics, not press releases.
Otherwise, you risk alienating a certain segment of your user base (“But just the uncool ones!” the kids will say) or frustrating your help desk who now has to handle the callers/emailers complaining about the site not working in IE 8.
(Actually, I am repeating myself.)