Ask questions or just talk about different languages. Since BrainKing is an international game site supporting many languages, this board can be kind of useful.
Fencer, a while ago, I asked you to add Phonetic Symbols to the smileys or somewhere else on the site. Now that we have this board, I think it's quite benefitial to have them. Here's a link to them as the appear in Oxford Advanced Learners Dictionary: