Americans conducted 15.4 billion core searches in March 2010, a healthy 6.2% increase from 14.5 billion the previous month, according to comScore qSearch data.

Google Sites led the core search market with 65.1% market share, down from 65.5%. Yahoo Sites slightly rose from 16.8% to 16.9% market share. Microsoft Sites also grew slightly from 11.5% to 11.7% market share.

In the March 2010 analysis of the top properties where search activity is observed, Google Sites led the search market with 14.3 billion search queries, followed by Yahoo Sites with 2.7 billion queries and Microsoft Sites with 1.9 billion. experienced significant growth during the month with a 48% increase to 647 million searches.