CashCrate is a site in which you sign up to complete surveys & other trial offers in return for payouts ranging from $.20 - $20. This site is completely free & has a great reputation among GPT site. It also includes a built-in referral system, in which makes you 20% of what your referral makes and 10% of what their referrals make. You'll also receive a $3.00 bonus for each referral who meets the $10 minimum payout. The check below was for $23.05 & that was within a 3 hour period spanning 2 days.

[Sorry the picture is so blurry, we don't have a scanner.]