comScore released the latest data today. From their release:
Google Sites led the U.S. core search market in November with 65.6 percent of the searches conducted, followed by Yahoo! Sites (17.5 percent), and Microsoft Sites (10.3 percent). Ask Network captured 3.8 percent of the search market, followed by AOL LLC with 2.8 percent.
Americans conducted 14.4 billion searches in November, up 1 percent from October. Google Sites accounted for 9.5 billion searches, followed by Yahoo! Sites (2.5 billion), Microsoft Sites (1.5 billion), Ask Network (548 million) and AOL LLC (401 million).
Not surprising: Amazon and Ebay saw increased search activity in November. Also not surprising Facebook increased 7%; MySpace decreased 7%. Bing, from Microsoft, clearly gained from its launch efforts - but the gain may have come from its own: other Microsoft sites, partner Yahoo! and "old" tech Aol.