Facebook wielded data to reward, punish rivals, emails show
In early 2013, Twitter Inc. launched the Vine video-sharing service, which drew on a Facebook tool that let Vine users connect to their Facebook friends. Alerted to the possible competitive threat by an engineer who recommended cutting off Vine’s access to Facebook data, Zuckerberg replied succinctly: “Yup, go for it.”A spokeswoman for Twitter declined to comment. ‘We’re trying to enable people to share everything they want, and to do it on Facebook,’ Zuckerberg wrote in a November 2012 email. Facebook said Six4Three “cherrypicked these documents from years ago as part of a lawsuit to force Facebook to share information on friends of the app’s users. Facebook touted itself as championing privacy four years ago when it decided to restrict outside developers’ access to data about its users’ friends.