Relentless competition != social; Facebook != open; also see Facebook Is Done Giving Its Precious Social Graph To Competitors (TechCrunch)
"Within hours of Twitter launching its Vine video-sharing application on Thursday, Facebook has cut off access to Vine’s “find people” feature, whichFacebook Cuts Off Friend-Finding Access to Vine, Twitter's Video App - Mike Isaac - Social - AllThingsD
letsused to let Vine users find their Facebook friends using the Vine application.
But the cutoff isn’t exactly surprising, given Instagram recently snipping Twitter cards integration, and Twitter cutting off access to Instagram’s “Find your Friends” feature. Welcome to the new, competitive landscape of social tech companies.
The loser in all of this? Sorry, user, but it’s you."