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 academics and those enrolled in higher education
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 active researchers, academics and students of physics
Q&A for people studying math at any level and professionals in related fields
Q&A for science fiction and fantasy enthusiasts
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for user experience researchers and experts
Q&A for power users of Apple hardware and software
Q&A for members of the workforce navigating the professional setting
Q&A for those involved in the field of teaching mathematics
Q&A for students, researchers and practitioners of computer science
Q&A for historians and history buffs