Earlier quoted context omitted.
> "Google's reasoning for the move is largely performance-based, apparently" Yeah, because WebGL never crashes the browser (not even the kind of small demos that seems to be all it's used for).
I've been developing WebGL content for the past 18 months and, so far, it hasn't crashed from any WebGL issues. And that's with my code which is pretty awful most of the time.
Unfortunately the abstraction layers aren't yet good enough that something stable on nvidia will be stable on ati :)