Nowadays I do some JS compatibility analysis for YesLogic (Prince XML HTML to PDF software) and some web development (minus.no).

Earlier I worked for Mozilla doing site compatibility work. (In other words, I spent my working day reading your bug reports and trying to figure out what's broken).

(I used to work at [Opera Software][1], so most of my older answers on SO are about Opera) [1]: http://www.opera.com