Google maintained its lead as the No. 1 search engine. About 3 billion U.S. Web searches were performed using Google in October, or 49.6 percent, compared with the company's 50 percent share in September, according to data from research group Nielsen NetRatings. Yahoo, the No. 2 search provider, facilitated 23.9 percent of searches, compared with 23.4 percent in September. more...