Chris McGrath [1] has setup an irc channel for the Ruby Ireland group [2]. It’s #ruby.ie on irc.freenode.net. I’ll be lurking there most days. Incidentally you can also find me on #sioc, #swig, #rubyonrails, #ruby-lang and #erlang. If you’re looking for an irc client I recommend Colloquy [3] on Mac and Xchat [4] on linux.