Facebook added more than 2 million visitors in just the last month. MySpace, by contrast, has grown only 7% in the last year but has amassed an audience of 57.4 million. Among the top 10 social networking sites, movie site Flixter was the fastest-growing, increasing traffic 316% year-over-year to 3.3 million.
Professional networking service LinkedIn also kept up its rapid growth, with traffic growing almost four-fold to 5.4 million as of November.
Not all of the top social sites enjoyed gains in the last year. AOL Hometown and AOL Community, respectively, saw their audiences shrink by 22% and 43%. Meanwhile, traffic to rival alumnus sites Classmates.com and Reunion.com, has fallen by 6% and 14%, respectively.
--Mark Walsh