After watching Mrs-Barakta's-Mum using her iPhone, I started to wonder whether the massive usability win of IOS for the stereotypical technophobic parent demographic wasn't so much a function of clear UI design, as a matter of setting things out so that a user prodding things at random inna infinite-monkey style will frequently produce an approximation of the desired result.
Not sure that's a good idea when you let them loose on the web, thobut.