Traffic to Barack Obama's website, BarackObama.com, has doubled that of Hillary Clinton's site, HillaryClinton.com.
Though they drew similar amounts of traffic in December 2007 - when Clinton led by about 40,000 visits - traffic to Obama's site grew fivefold to 2.2 million visits in January, doubling Clinton's 1.1 million visits.
Obama and Clinton were the Internet's top political draws in January, according to comScore.
Obama leads Clinton in several Web 2.0 metrics, including numbers of Facebook supporters (589,224 to 120,216), MySpace friends (287,715 to 185,709) and YouTube views (21.1 million to 7.6 million).
Of the $32 million Obama's campaign raised in January, $28 million came from mostly small donors online.
On the Republican side, John McCain made the biggest Web-traffic gains in January, with traffic to his site more than tripling to 596,000 visitors. McCain still trailed the online audiences of Internet favorite Ron Paul, Mike Huckabee and Mitt Romney, who has dropped out of the race.
However, McCain has overtaken Paul in online buzz, topping Paul 44 percent to 30 percent, according to Yahoo!'s Political Dashboard. The score shows the percentage of users who search for a topic on a given day.
The blog Politico, started a year ago by two former Washington Post reporters, was the third-most-trafficked political site in January with 995,000 visitors, up from 541,000 in December 2007.
