The use of Facebook in the U.S. significantly intensified last year, driving up the social-networking site's usage to impressive levels in the country that is its oldest, most mature market, according to comScore.
In December 2009, almost 112 million unique visitors went to the site, up 105 percent compared with December 2008, making Facebook the fourth-most-popular site in the country. On average, 37.7 million people visited the site per day, up 181 percent, and viewed a total of almost 45 billion pages during the month, up 151 percent.
Overall, Facebook users spent almost 28 billion minutes on the site, almost triple the time in December 2008 and giving Facebook a 7 percent share of time spent online in the U.S. in general. Total visits more than tripled to almost 3.1 billion.