I've found that MIXI is an interesting tech/cultural phenomenon and that there's even a JapanesePod101.com community there. Using MIXI in conjunction with rikaichan has actually increased my vocabulary as the barriers to reading kanji are lowered, and the content is (arguably) more interesting than a textbook - and allows one to find penpals too. Perhaps it would be good to let people know about MIXI - or would that be not allowed as it is a commercial business with no affiliation to JapanesePod101.com?
It's a good idea, but you're a little late. There's already been a show featuring mixi. In fact, that's how most people here found out about it and got invites.
