a list of all rooms, recently active rooms first
A place to chat about Bitcoin.SE, Bitcoin in general, and anything else that might be up.
Everything Minecraft. We have a DW20 1.7.10 server: mc.echoreply.us There's some extra mods: http://mc.echoreply.us/extra_mods/
Room for a chatbot to be noisy and not bother anyone
Because no one likes Twisted Treeline. Join our ingame chatroom: ArqadeCommunity
For long running debates, proselytizing, and anything resembling polemics that folks would rather not have in The Upper Room [Meta policy: http://meta.christianity.stackexchange.com/q/4510/3961]
For students, teachers, and linguists wanting to discuss the finer points of the Chinese language. Resources: http://chinese.stackexchange.com/questions/1120/resources-for-learning-mandarin-chinese
A room to talk about English, linguistics, or anything you want! But remember this is a public room: do not give out personal contact information here.
Main chat room for http://worldbuilding.stackexchange.com
General discussion for http://unix.stackexchange.com. If you have a question, see http://unix.stackexchange.com/questions/ask
A place for learners and non-native speakers of English (along with native speakers and teachers who want to help these people) who are on their own quest of mastering their English.
Discussion for Common KotH Protocol/Interface Thing
Our menace: the Unanswered queue. Our goal: total annihilation! (NB. This room is only for old, unanswered questions.)
General chat room for the History of Science and Mathematics StackExchange (http://hsm.stackexchange.com/)