For less constrained conversation, go to #lesswrong-alt (unregistered; recommended by #lesswrong's op), also on Freenode.
EDIT: #lesswrong's rules have been changed to "behave like decent human beings, give ops liberally to channel regulars, don't ban without warning or if most people disagree". This PSA is hereby retracted.
If you're a participant in the channel I'd be very happy to give you founder privs - have been looking for a generally-trusted person to sort that out with who is a participant in the channel, so if you're willing let me know.
#lesswrong on Freenode, which used to be the official unofficial LessWrong channel, has been re-designated as a private hangout reserved for, roughly, ggreer/AngryParsley, efm, realitygrill, rsaarelm, ksotala, gwern, Grognor, chelz, cwillu, Boxo, nshepperd, ivan, mstevens, and jandrog. You're still welcome to speak there, but only if whatever you're saying is interesting/important to one of them and the op.
For less constrained conversation, go to #lesswrong-alt (unregistered; recommended by #lesswrong's op), also on Freenode.
EDIT: #lesswrong's rules have been changed to "behave like decent human beings, give ops liberally to channel regulars, don't ban without warning or if most people disagree". This PSA is hereby retracted.