I used to write the Linux and Unix column in Personal Computer World, until it closed a couple of years ago. My interest is mainly Linux, open source software and development (mainly C).
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 Ubuntu users and developers
Q&A for peer programmer code reviews