Controversial, but I think that giving to everyone a computer connected to the internet - be it PDA-sized or any other form - was a mistake, and everything happened so fast that no one could control what was going on.

I say it was a mistake because for the generation grown with BBS and 14.4k modems the dangers of an open network were evident and real from the start, even if at the time they were minuscule in comparison to now. Those born with an always on, always connected device already in their hands lacked this awareness from the start.