Google Retains Massive Lead in US Search (GOOG, MSFT, YHOO, IACI, AOL)

Early leaks of search engine data from comScore shows that Google Inc. (NASDAQ: GOOG) has added to its market share in February, posting a 66.4% share . Microsoft Corp. (NASDAQ: MSFT) and Yahoo! Inc. (NASDAQ: YHOO) together get about 29%, with Ask. com (owned by IAC/InteractiveCorp. (NASDAQ: IACI)) grabbing 3% and Aol.com (NYSE: AOL) getting 1.7%.

According to a report at Search Engine Land, Google’s share increased 1% in February compared to February of 2011. The combined share for Microsoft and Yahoo fell slightly from 29.7% to 29.1%, but Microsoft’s share grew by 1.7% while Yahoo’s share fell by 2.3%.

The totals are not yet official, but based on these leaked numbers, Yahoo’s market share has dipped from an official 14.5% in December 2011 to 13.8% in February. And most of the loss is going to Google, not Microsoft.

Now, if Google could only figure out a way to grow share in China…