Both comScore and Nielsen put out November search numbers that show Google and Bing up and Yahoo losing share. According to comScore:
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).
Here are the comScore numbers:
Nielsen estimates that Google users conducted 6.5 billion queries vs. the 9.5 billion number from comScore. That’s a pretty massive discrepancy in terms of aggregate query volume. In comScore’s “extended search rankings,” Google Sites had 13.8 billion search queries overall.
Regardless of which numbers are consulted it appears that Yahoo is losing share incrementally to Google and/or Bing. Ask and AOL also appear to be as well.