a list of all rooms, recently active rooms first
General Arqade chat room, wherein adulthood is mandatory.
Associated with Math.SE; for both general discussion & math questions alike. Just ask; don't ask to ask. Rarely if ever expressible as a ratio of integers. See below for guidelines.
Welcome back, my Master! お帰りなさいませ、ご主人様! Sit back and relax with general chat for http://anime.stackexchange.com/. We're now serving anime & manga with a side of Moé. Smiles are free and lolis are plentiful. Ask about our new maid service.
Chat room for Travel.SE http://travel.stackexchange.com
General on- and off-site discussion for http://dba.stackexchange.com
General discussion about Code Review -> http://codereview.stackexchange.com/
Game development and other polite discussion. Please don't star trivial messages.
General discussion for http://codegolf.stackexchange.com
General chat for Physics Stack Exchange (http://physics.stackexchange.com/). For MathJax use http://meta.math.stackexchange.com/a/3297#3297
A place to talk with friends from the EE community about vacuum nanotubes ... and beer..
Not in main chat. (Though links to cool 5e stuff should be shared there.)
General discussion around Ask Ubuntu, Ubuntu & official Ubuntu derivatives. For other Linux distros please see: http://chat.stackexchange.com/rooms/26/unix-and-linux