Google continues to gain search market share by Seth Weintraub @FortuneMagazine October 14, 2010, 2:30 PM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons Data from comScore indicates that Google’s core search saw a positive impact from Google Instant. While search queries were up 4% overall in September from August , Google GOOG doubled the industry’s gain as a whole, comScore said in a report yesterday. Google’s share was likely bolstered by the new Google Instant which shows results as the user types. In September, Microsoft’s MSFT Bing grew 2% while Yahoo YHOO lost 5%. Microsoft now provides search results for Yahoo so consumers may be going directly to Bing if they know the results will be coming through Microsoft’s engine anyway. Microsoft and Facebook announced a deal yesterday to incorporate some of Facebook’s social graph into Bing’s search results. Yahoo, after altering its slideshow navigation to individual search queries, is crying foul, saying comScore didn’t accurately count queries. ComScore said it adjusted its measurement technique to account for the change, which prevented Google from artificially improving its market share. Google searches accounted for 65.4% of all U.S.-based searching in August 2010. That rose to 66.1% in September 2010, according to the comScore report. Google announces earnings later today.