Trekpay

Trekpay is a ptc site. Here instead of money in cents, it will first provide you with credit points. These credit points are converted to money every week between tuesday to thursday. For each referal, you get 15 credit points. With more referals, the earnings increases fast.
The minimum payout is $5.50. Without referal,this amount can be reached within a month. But if you have referrals, then it will be easy for you.

http://www.trekpay.com/?ref=2742