I am a web application developer in China for both front-end and back-end, but focus more on the later one.
I have worked on
PHP+Mysql for 2 years, and now I prefer
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for meta-discussion of the Stack Exchange family of Q&A websites