Chrome replacing Firefox
blog.statcounter.com
blog.statcounter.com
First of all, there is not enough data to prove that the shown variations are greater than the standard variation of browser usage.
Then, Chrome usage has not settled yet. I mean, who is going to give Chrome a try? My mom, who is using the-installed-browser, and is completely oblivious about alternatives? Or the Firefox 3 users, who probably tried Safari, IE8 and Opera, too? Every new browser will trigger an initial hit with those people just because of their curiosity. Then again, any new gadget will, so what's the point?
Let's wait some weeks (or months) and review the browser adoption then.
What's more interesting about this data is the huge jump IE got on Monday. It makes sense, lots of people who are required to use IE at work might use Firefox at home on the weekends.
Of course this might mean daily browser market share stats are statically flawed.