Treasure Trooper is another great gpt site. They have the most 100% free offers I have seen. They have a lot of bonus offers available on certain days of the week also. They have a 2 level referral system where you earn an extra 20% of your referral's earnings and 5% of their referral's earnings. After completing an offer you win a coin have or a platinum coin, and chance to win a pearl in a mini game. The coins can be used to purchase and xbox 360, Ipod, and other goods. The pearls are used to buy 2 unreferred members. They also have 2 daily surveys and cash back shopping. Treasure Trooper has a very active forum that will answer all your questions. Treasure Trooper is a great place to earn money and have fun. Click here to join.

General Information:
Minimum age to join: 13
Minimum payout: $20
Payment processed: On the 25th-30th if you met minimum payout the month before.
Payment type: Check or Paypal
Internation Members: Yes, Most of the offers are for the US. There are quite a few offers for Canada and the UK.