Cash rebate deals on Black Friday

Have you ever shopped online through a "cash back" site? The main ones are ExtraBux, eBates, and Cashbaq.

The way it works is you register for free at one of these sites, then click through to the retailer of your choice. They track what you purchase and send you a check a few weeks later with a percentage of your purchase. The percentage back varies widely, from 1-50% back.

The cash back sites are gearing up for Black Friday with some pretty hot deals. Each site negotiates their own deal, so if you have a specific purchase in mind, compare the offers to get the biggest discount.