After I found answers to most of my questions on stackoverflow by googling, I decided to join and contribute. I am here to learn and help. So far so good... I usually find my answer without asking the question.
Q&A for professional and enthusiast programmers
Q&A for people studying math at any level and professionals in related fields
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for scientists using computers to solve scientific problems
Q&A for students, researchers and practitioners of computer science