Well, it depends wether you care about the market share you are leaving out. http://www.w3schools.com/browsers/browsers_stats.asp http://www.w3schools.com/brow

Well, it depends wether you care about the market share you are leaving out. http://www.w3schools.com/browsers/browsers_stats.asp http://www.w3schools.com/browsers/browsers_stats.asp http://caniuse.com/ http://caniuse.com/ I think that for most applications, it's not worth the trouble...