Facebook already cut off friend-finding for Twitter's Vine
new mini-video sharing app, Vine, earlier to day. The app came with the ability to share the 6-second looped videos to both Twitter and Facebook, and just hours after the app launched, Facebook turned off friend-finding to the app.
The app had allowed users to search Twitter, Facebook, by email to find friends to add to the app, but now when users try to find friends through Facebook, the app just gives an error message which says, "Vine is not authorized to make this Facebook request."
Of course, this shouldn't be a surprise given that Twitter did the same thing to Facebook-owned Instagram not too long ago, and the fact that Instagram cut integration for Twitter Cards. It seems that Facebook and Twitter just can't get along.