[RubyKaigi](http://rubykaigi.org/) and more recently [Sapporo Ruby Kaigi](http://sapporo.rubykaigi.org/2012/en/) have been providing realtime translation services. The way this has worked is that volunteers listen to the speakers presentation, and simultaneously translate it to an IRC channel that is broadcast next to the main screen, like the photo below. At RubyKaigi 2011, I tried to help, but m