According to the Detroit Free Press, "Amazon.com sells everything from car parts and jewelry to groceries and golf clubs — in addition to the books that first got it started — so it's not surprising that the Internet titan is ranked first among e-tailers."

"But the company that is the No. 4 e-tailer puts all its eggs in one crust, er, basket: Domino's. The Ann Arbor-based chain's online ordering system has catapulted it to the forefront of Internet commerce, and it's giving the pizza seller a big advantage in the marketplace. A fourth of all Domino's orders nationwide now come online. That, along with the company's new-recipe pizza, has helped Domino's post a profit of $47.1 million through the first half of the year, up 23% from a year ago."

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