I wrote about Ebates here. The basics of the program are:
1) You register for free
2) You go to Ebates, find the online store you want to shop at, and click to it, through the ebates site.
3) You earn $5 as a sign on bonus, then you earn back a percentage of whatever you purchase while shopping. The money adds up, and they send you a check.
***TODAY is special, because of Black Friday, and being such a big shopping day, many of the merchants they feature are offering double or more for their cashback. For example, Gap, normally offers 2% cash back, today you would earn 10% cashback.
If the crowds are too much to tolerate, or you just like the convenience of shopping at home. Today is a great day to start that Christmas shopping online, and earn a little back through Ebates.
Also FYI, check out the Retail Me Not website, where you can search for the store you are shopping at, and look for additional discount codes, or free shipping codes, that you can plug in before you check out!
Sorry this is so much information, just ask if you have a question!
Happy Black Friday Shopping!