Although I'm sick of all the userXXX's with no programming experience asking people at SO for complete code snippets for basic tasks I keep writing answers because other users saved my time with their excellent answers to my questions.
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for passionate videogamers on all platforms
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for user experience researchers and experts
Q&A for apps, scripts, and development with the Stack Exchange API
Q&A for system and network administrators
Q&A for Information security professionals
Q&A for computer enthusiasts and power users
Q&A for Ubuntu users and developers