A report from Net Applications shows that Zuckerberg and company are responsible for two-thirds of all Web traffic referred by social media sites.
What does that mean, exactly?
Facebook referred 0.66 percent of all Web traffic from social networks, which means that out of every 10,000 times someone clicked on a link, 66 were links posted on Facebook, according to Net Applications.
Nos. 2 and 3, according to the report, are StumbleUpon and YouTube. The remaining social networks—including big players like LinkedIn, Twitter, and Google+—barely make a blip compared with the traffic that Facebook drives.