Study: 1.61 Billion People Use Social Networks

A new research report reveals that an estimated 1.61 billion people will log in to social networking sites at least monthly in 2013, up 14.2% from a year ago.

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The study, conducted by the research firm eMarketer, found that social networking sites use is growing rapidly.

According to the report, the highest penetration of social network users is in the Netherlands, at 63.5%.

The United States remains the country with the greatest number of Facebook users, at 146.8 million.