Google continued to increase its US search share dominance in October, widening its lead over Yahoo and Microsoft.
In October, Google's share of Web searches by people in the US rose to 71.7 percent, up from 71.2 per cent in September and 64.5 per cent in October of 2007, according to market research company Hitwise.
At the same time, Yahoo's share slipped to 17.7 per cent, from 18.1 percent a month earlier and 21.7 percent a year ago. Microsoft's share rose slightly in October to 5.4 per cent from 5.36 percent in September, but the down from 7.4 per cent in October of last year.
Internet searches at Ask.com fell to 3.5 per cent from 3.6 per cent a month ago, and from 4.8 per cent last year.
Hitwise bases its data on a sample of 10 million US Internet users over four week rolling periods. The Microsoft figures include Live.com and MSN Search but does not include Club.Live.com.
The remaining 43 search engines Hitwise tracks accounted for 1.6 per cent of US searches in October.