I run nihongoresources, am a developer for Processing.js, and work for Mozilla as a software engineer involved with webmaker.org where I do frontend, JS library, and some backend work -- I also like math, and do stuff like http://processingjs.nihongoresources.com/bezierinfo. I use StackOverflow mainly to help people with Processing/Processing.js questions, but since I've used Java and PHP for ages, and know general JavaScript pretty well, I'll pitch in on those, too.