i'm a programmer,i living Beijing,China;i am interesting in ruby、rails、mysql、linux and other open source software.
Q&A for professional and enthusiast programmers
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for computer enthusiasts and power users
Q&A for apps, scripts, and development with the Stack Exchange API
Q&A for professional system and network administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language