TiddlyWiki on IRC
I’ve started regularly hanging out in the TiddlyWiki IRC channel. It’s an open chatroom that anyone can join; there’s half a dozen or so regulars, including FND and Saq, and several of my colleagues at Osmosoft.
The channel is called #tiddlywiki and it lives on the server irc.freenode.net.
IRC is quite old-school; there’s a bunch of different clients available for various platforms. I’m using something called Conversation for the Mac.