Programming Related:

- http://www.reddit.com/r/programming

- http://www.reddit.com/r/learnprogramming

- http://www.reddit.com/r/ruby

- http://www.reddit.com/r/vim

Linux Related:

- http://www.reddit.com/r/linux

- http://www.reddit.com/r/ArchLinux

- http://www.reddit.com/r/commandline

Meta:

- http://www.reddit.com/r/bestof

- http://www.reddit.com/r/depthhub

- http://www.reddit.com/r/SubredditDrama