BTW, in addition to forwarding, there's also the AIM "short codes" which do let you log in, log out, initiate conversations and so on. I do use that when driving, in a basement or someplace where the data network might drop out. It has the advantage of using sms without the disadvantages of IM forwarding. The downside is that, as far as I know, AIM is the only supported service (of course). Of course, it's all still better than palringo.
