I've been playing with the Facebook Timeline today. It's quite cool for keeping a personal journal of what I'm up to and not really something I'd prefer other people be able to easily browse. One of the things I found particular creepy is the way it aggregates all public events that you've attended on your Timeline. In other words, it's quite easy for someone to look at your timeline and browse to see a summary of all the public events you've ever attended. While this information was publicly visible on individual events, Timeline now lets anyone see ALL the public events I've ever attended.
In order to shield this information, I went and removed myself from every public event I've attended and will not be RSVPing to any more public Facebook events.
The Timeline goes live for people around October 1st - so be aware (though you will get a chance to opt in before it turns on). Developers can get a preview now. You can learn more here.