With all this WebGL fun that is going around, I find it very annoying that I have to be missing out. I'm on Linux, using the Intel Mesa driver and while they say it on the WebGL support page that I should keep my drivers up to date, it's "too up to date" (7.11.2 and WebGL only works for <=7.9)... I mean, come on!
A warning: enabling WebGL on a known-bad set of drivers means arbitrary pages can now crash X.
We probably need some "click to play" like feature for WebGL, but it's a terrible user experience: you load a page, you get an offer "do you want to see the stuff yes/no" and sometimes when you click yes your machine hard locks.
There's a reason it's on a blacklist though! It's usually system stability issues, but it could also be security-related. Don't just globally ignore the blacklist without knowing why.