Professional software dude for about three decades (and an unprofessional one before that) - currently in Denmark.
The silly name came about one day when I wanted to respond to someone with an equally silly name and then afterwards realized that you can only change it every so often - and now it seems there are too many references to "500..." in other comments for me to change it back - oh, well.
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for students, researchers and practitioners of computer science
Q&A for theoretical computer scientists and researchers in related fields
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for programming puzzle enthusiasts and code golfers
Q&A for people seeking specific software recommendations