5. Apple.com

5. Apple.com

Customer service ranking: 4
What it sells: Apple-brand consumer electronics, including iPhone, iMac, and PowerBook
2008 revenue: $10.8 billion
Best-selling items during the 2008 holiday season: iPod Touch
Anticipated best-sellers for the 2009 holiday season: new MacBook, Magic Mouse

Along with its iTunes store and its Apps store, which now includes over 100,000 applications for the iPhone, Apple.com also sells the full range of its consumer electronics, as well as refurbished versions. It's based in Cupertino, Calif., and launched in 1996. (However, the company bought the domain in 1987.)