1. MrRebates – $5MrRebates first got into business in 2002. Today, it boasts of over 2,300 participating stores and the number is still growing. Members will be rewarded with a sign-up bonus of $5, and the payout threshold here is $10.

They have a Store of the Week and they have special promotions regularly that feature numerous special discounts to cater for the different shopping seasons throughout the year.
2. LiliDeals – $5LiliDeals, with a network of over 1,200 participating stores, gives up $5 bonus on new sign-ups!
3. CouponCactus – $3Coupon Cactus offers both discount coupons and cash rebates. They enjoy the support of over 5,000 stores nationwide! Sign-up bonus is $3 bonus and the first payout threshold is $10.
4. CashbackCat – $5CashbackCat is fairly new (2009), but the support it enjoys is tremendous: 2,000+ stores! Sign-up bonus is $5 and the first payout threshold is $20.
They also contribute to a number of charities, like Make-a-Wish, Humane Society, Toys For Tots, and others!
5. RewardsRunner – $5The sign-up bonus at RewardsRunner is five dollars. In addition, the website also offers cash rebate on purchases made at a few hundred stores!
6. PennyFul – $5PennyFul has an impressive network of participating stores: over 1,300 — and every new member gets a $5 bonus on sign-up!
7. EverSave – $3EverSave is a popular daily deal website that gives new members a $3 credit for joining.