Facebook may be the biggest social network, but it wasn't the first.
You might remember MySpace and Friendster. You may have had accounts on those sites. But when was the last time you visited them? Does anyone use those social networks anymore?
Turns out plenty of people do... if you know where to look.
Catch News Stream with Kristie Lu Stout weekdays at 9pm HKT/ 1pm GMT / 8am ET on CNN International.