‘Unsupported’ is a great mini-post/rant from John Gruber on user expectation from software, compared to everything else. It brings to mind something I read, (maybe on 37 Signals, and obviously in a more succint and elegant manner) about users and software - a driver would never complain that their car didn't fly when they drove it off a cliff, but they often perform the equivalent with software and think they can blame the developers afterwards.