On: JSMpeg – Decode It Like It's 1999

[daurnimator]

I'm not sure how usurping this is an 'exploit'. It's used as a heuristic to save battery life.

and if you're trying to run down a user's battery I can think of better ways.

[recursive → daurnimator]

The goal isn't to run down the users' battery. The goal is to do whatever timer callback processing a tab is doing that got throttled in the first place.

[dzhiurgis → daurnimator]

Well you can mine bitcoins or run some botnets on victims computer.