I have been a member of Rakuten formerly Ebates since November 18, 2007. Over the years I have received $815.10 just for shopping through their portal! Who doesn't like FREE MONEY????
Right now Rakuten is offering a $30 BONUS for any new members who sign up and then spend $30 on any store that pays back through Rakuten. You have 90 days to make a purchase. Once you do, you will see the bonus added to your account within a few days. So it's up to you to decided what you want to get FREE for $30!
Sign up here
I buy mostly car and motorcycle parts, and the online store I use the most is Ebay. Ebay changes categories that pay back money through Rakuten. Rakuten has daily deals and double cash back at certain times. I never purchase anything online without first going through Rakuten.
My favorite stores that I shop frequently are: