Can't help feeling....
...that this seeming rabid desire to give away your personal details to pretty much anyone who asks is all going to come crashing down some day soon. Not quite sure how; maybe some mass blackmailing or a MASSIVE bank fraud or something, but I'm betting it will...
At the very least, I'm sure there will be millions of people waking up one day (probably the same day) and finding that they really wish they had been more careful.