A great site for computer hardware. They have great prices, and they are a respectable dealer. Before buying any major computer hardware, take a look at Newegg's prices.
Has all sorts of cool information about all the latest tech stuff.
Gamefaqs contains information including walkthroughs on just about every game that exists.
Has lots of downloads.
Offers ratings for online stores, with many customer reviews. Allows you to find the prices for electronics at multiple sites simultaneously. Also posts some really great deals daily.