New ComScore numbers show Facebook grew fast over the past year in unique visitors. That still wasn't enough to get it past Skyrock, a popular Paris-based social site.
Facebook and MySpace may lead the pack in the U.S., but there are a slew of leading social networks from around the world that we don't hear about on a daily basis. Don Reisinger takes a look at five.
Facebook's growth in unique visitors was clocked at 153 percent over the past year, according to the statistics firm, and 115 percent of that growth was outside the U.S.