Wasn't this sort of thing discussed back in the heyday of Palm, when their devices started to get some wireless connectivity? I seem to remember thinking about

Wasn't this sort of thing discussed back in the heyday of Palm, when their devices started to get some wireless connectivity? I seem to remember thinking about the potential of just such a system back then, even though I never did anything with it. I hope that Apple can (and will) do something more useful than just think about it. =)