Many people today get points or money back when they charge items on their credit cards. Now their are websites, that are affiliates, of major retail, travel, etc. companies. These companies pay ebates.com and fatwallet.com for bringing you to their site and then you purchasing something while there. Ebates and Fatwallet pay YOU money to purchase something using their site to buy something from a company that they are an affiliate of.
For example, today I had to book travel plans for a business trip I will soon be taking. I went to ebates and fatwallet to see if they were affiliates of airlines and online hotel sites. Ebates provided the best deal. I am flying American Airlines to New York for the same cost as if I were to buy the ticket elsewhere, but with ebates I will get $2 back. Hotels.com offered 4% back if I booked my hotel through ebates. I did and I will receive $25 back just for booking travel I was going to book anyway.
Web savings from ebates and fatwallet are tough to beat and easy to use. Check out other sites out there that offer this service and you can add more cash back on purchases you make.