I run nihongoresources.com, inkcyclopedia.org, and keep pretty much all my code over at http://github.com/Pomax, work on Processing.js, and work for Mozilla as a software engineer involved with webmaker.org, where I do frontend, JS library, and backend work -- I also like math, and do stuff like http://pomax.github.io/bezierinfo. I use StackOverflow mainly to help people with JS, Processing/Processing.js and Bezier curve questions, but since I've used Java and PHP for ages I'll pitch in on those, too.
Q&A for professional and enthusiast programmers
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Q&A for people studying math at any level and professionals in related fields