If you have been thinking about trying Rakuten (sign up here for FREE), now is this time! Right now if you make at least a $40 in purchases within 90 days through their shopping links you will receive $30 in your account.
Rakuten has hundreds of cash back partners so there are a lot of stores to shop from. I, mainly, use it will shopping at Walmart and eBay. Plus you can get paid by check or via PayPal!