DealMac

Dealmac is a deal aggregate offshoot of dealnews.com that focuses on technology: computers, peripherals, cases, mobile, video games, etc. The staff does the work of digging for deals for you so that you can save the greatest amount of money on a purchase, while they get a cut from the sale for referring you. Good for both parties.

I check dealmac almost daily, and have utilized "deal alerts" multiple times, which are customizable and notify you when a desired item drops below a designated price. It's super easy to save money on just about every tech purchase by simply being patient.

The items the site features are well-varied, and there's definitely something for everyone.