If you've always wanted to build a computer from the ground up but never really had the time to find the necessary parts online, a coupon-centered blog called Coupon Codes Mall has done all the work for you. We think their choices lead to a pretty solid build, and all the coupon/sale links are current, but let's just say this straight-up: You should temper your expectations right now. It's a simple bare bones PC and it probably won't win any real tough benchmark contests. But it's hard to argue with useful and efficient cheapness.