I signed up several years ago, but forgot all about it!
Basically if you buy stuff online and go through them, you earn a percentage of your purchase in cash back. It's not a lot, typically between 1%-4% but it can add up quick. And it's for doing nothing except starting your shopping at their site!
Go here to sign up and earn $5. instantly!
It's easy and quick to join all you need is an email address!