Trend implies Chrome to overtake IE in browser share in one year.
gs.statcounter.com
gs.statcounter.com
As my maths teacher used to say, "even in the privacy of your own home, you should not extrapolate."
IMNSHO, the adoption of IE9 (on new computers with Win7 preinstalled, perhaps?) might make a significant dent in that projection. I've seen a very similar graph (starring Firefox) a few years back; and then IE came back from the dead with version 8.
I'd assume some kind of tipping point effect as it becomes "normal" not to run IE and/or to run Chrome that could lead to such acceleration since the barriers to adoption are so low.
[0] http://gs.statcounter.com/#browser-eu-monthly-200809-201107
http://gs.statcounter.com/#browser-DE-monthly-200809-201107
In antarctica everyone is using safari.
Can someone please explain to me why this matters?
As you say, you need to support IE, Chrome, FF and Safari - but (at least for IE < 8) this has always meant supporting the standard and then tweaking it to make it work in IE. I've never had significant differences in webpage functionality between chrome, FF and safari (YMMV). IE 9 is MUCH better at standards compliance - but this is purely because of MS's losses in marketshare.
If you don't see this as a significant thing, then I'm guessing you're too young to have been coding web pages when IE had a 90%+ market share. You kids have it easy. :-)
Google are doing the same in reverse, making billions by pushing the web platform on the desktop and mobile.
I'm assuming you must be very young...
http://gs.statcounter.com/#browser-ww-monthly-200809-201110
The curves are even more revealing.
In 5 years from now we'll probably start saying how "maybe its not a good thing for ANY company to have 90%+ market share in something as important as the browser" and how "Yeah well Google didn't play fair, but that' ok cause we hated MS, and no one cared much about brand-fanboism for Opera or Firefox"
"Other" (which is massively increased) and IE9 are the only increasing entries in this plot:
http://gs.statcounter.com/#browser_version-ww-monthly-200809...
While what's in that "other" plot isn't listed, the Chrome and Firefox version schemes and their associated plethora of smaller and more frequent releases have played havoc with the classic version-plot scheme.
But like the combined version share, what you can use is often more about the people holding you back on IE 6,7,8 than the ones pushing you forward.