Techie: LAMP, Vim, Zsh, Cygwin
Being an "Expert" in your own small pond is kind of lonely when you get stuck yourself so it's fantastic to have access to the hive at Stackoverflow
Q&A for professional and enthusiast programmers
Q&A for professional system and network administrators
Q&A for computer enthusiasts and power users
Q&A for Ubuntu users and developers
Q&A for enthusiasts and power users of the Android operating system
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.