My friend showed me this great new website called lockerz.com.  You earn PTZ or points by answering the daily question, signing in, and inviting your friends to join.  Once you earn PTZ, you can use them to buy actual products such as computers, games, ipods, and tons of other cool stuff!  Best of all, its free!  You may wonder if its legit, and i can tell you personally that i have won a psp and a xbox 360 game.  If you would like to join or know more, then send an email to [email protected].  I'll hook you up with an invite!