Although I have absolutely no interest in Twitter whatsoever, I am suprised that nobody has started an independent sms to twitter gateway on a premium short code, that lets those suffering from the addiction "tweet" from the comfort of their messaging app whilst generating a convenient revenue stream, perhaps by adding one or two naff "enhancements" to make the experience less painful.
I mean, for example, you could shove an sms advert to each phone after every 7-10 "tweets", varying the interval so that the poor user is compelled to read them every time they hear their phone ring with a message, because they are scared of missing a "tweet".
