Hacking Sarah Palin's Yahoo mail account was easy, exposes shortcomings in password recovery mechanisms.

Attacker: Hacking Sarah Palin’s email was easy - Zero Day Blog, ZDNet.com

...after the password recovery was reenabled, it took seriously 45 mins on wikipedia and google to find the info, Birthday? 15 seconds on wikipedia, zip code? well she had always been from wasilla, and it only has 2 zip codes (thanks online postal service!) the second was somewhat harder, the question was “where did you meet your spouse?” did some research, and apparently she had eloped with mister palin after college...
I guess it pays to be fairly "anonymous" lest your personal history is online for all to see.