John,

You understand how it works and are OK with the consequences. So am I, up to a certain level. With my band we use Google calendar. Perfect for viewing and blocking dates we have to rehearse or gig. My personal calender on my iPhone (and HTC's before that) are synced with....Google calendar. So is my wife's calendar. I'm not afraid that that data will be used against me. (I never enter dates and addresses for appointments to rob a bank and such )

But I would hate to see pictures of my wife and/or kid used in some ad or as a stock-photo on whatever website or magazine. That is however a real possibility when you would use Twitpic.

I also would hate to have written a classic rock tune and see some-one else take it away from me, just because I had stored it on a "free" piece of web space.