Interestingly, rstat.us already does this one way. You can post a status update there and have it automatically crosspost that update to Twitter for you. I've s

Interestingly, rstat.us already does this one way. You can post a status update there and have it automatically crosspost that update to Twitter for you. I've switched to posting most of my text-only updates this way, so my rstat.us stream shows life even though all my followers are still on Twitter (for now).