According to the most recent comScore report, comScore Explicit Core Search Share Report * January 2011 vs. December 2010, Bing saw a 13.1% spike in search volume--2.2 billion web/network searches. Bing was the only search engine to report an increase in market share for that period. Bing's increase came at the expense of Google's market share. Google's market share is above 11.1 billion searches.