Paid clicks on ads across Google-owned sites and its advertising network jumped 33% during the quarter.
Amazon.com finished the year with a bang, racking up 10% of all online sales during the fourth quarter, according to a survey by Web research firm Harris Interactive.
The e-retailer increased its dominance over barnesandnoble.com in the book-selling arena, grabbing nearly two-thirds of online book sales. And it overtook ColumbiaHouse.com, a joint venture by Sony Corp. and Time Warner, by accounting for nearly a quarter of music and video sales online. In the Internet toy market, Amazon made good on its entry by finishing the quarter fourth among toy e-retailers with a 7.6% share.
"Amazon's strategy of leveraging its best-of-breed customer base into the new vertical markets appears to be highly successful," says Marc Engel, an analyst at Harris Interactive. "The holiday season shows that it does not take Amazon long to become dominant in a new market.''