Facebook remains the world’s largest social network by a wide margin.
According to GlobalWebIndex, 51 percent of the world’s internet users were active on Facebook in the first quarter of 2013.
Google+, once referred to as a ghost town, has steadily built a remarkable user base and now ranks second with a penetration rate of 26 percent.
The Top 10 are completed by YouTube, Twitter and six Chinese social networking sites.
Half of the World's Online Population Uses Facebook
Description
This chart shows the global penetration of the world's ten largest social media sites.
