Facebook also disclosed that from September 2012 to September 2013, Time's referral traffic rose 208%, BuzzFeed's increased by 855% and Bleacher Report experienced a boost of 1,081%. Facebook also announced a feature called Stories to Share for page managers of media firms that recommends which stories to share on Facebook.

Andy Mitchell, director of partnerships for Facebook, attributes much of the growth in referrals to improvements in Facebook's News Feed algorithm. "We're getting better at showing the right story at people who are interested in it," he says. In addition, Facebook has shared best practices with media firms, which help them post more effectively, he says. New research from SimpleReach bolsters the claim. SimpleReach found that Facebook drives more traffic to media sites than any other social media platform.

Along the same lines, Stories to Share helps those media firms figure out which stories to post next. The recommendation widget is pretty straightforward: It analyzes your homepage to see which stories people are sharing the most on Facebook even though the media property hasn't yet shared it through its Facebook account. That feature is going live on Monday with 1,5000 news organizations. Stories to Share had been in beta with a handful of news organizations (the company declined to identify which ones) over the past few weeks.