I'm a retired programmer, computer architect, and long time contributor to USENET, especially comp.lang.java.programmer.
I'm now learning web application writing for fun, so I expect to need a lot of answers. I'll try to contribute as well.
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for user experience researchers and experts
Q&A for those involved in the field of teaching mathematics
Q&A for academics and those enrolled in higher education