ComScore: Facebook Grew 5.1 percent in US Last Month, Held #5 Spot

In the United States, Facebook grew by slightly more than five percent between July and August, according to web measurement firm comScore, from 87.7 million monthly unique users in July to 92.2 million last month. This is the second month that comScore has put Facebook in the top five, after Google, Yahoo, Microsoft and AOL — all of which have more than 100 million users.