I'm currently working remotely, with a team of people that are fluent and think in different languages, and so to communicate my thoughts to specific person I usually use specific language. I don't think it's taken into account here. Using IRC-like things like Campfire in such group, or Google Groups, or writing memos wouldn't be of much use, unless it's done for every language group separately. Yet it all seems to work well for us with one-to-one communication.