Vine is not yet a day old and Facebook is already shutting its virtual doors to Twitter's.
Vine users are suddenly blocked from using the app's friend-finding feature to look up Facebook friends. Instead of letting you search for your Facebook buddies, the Vine app responds with the message, "Vine is not authorized to make this Facebook request."
It looks like Facebook has blocked Vine from accessing its API, or application programming interface, which would let Vine extract that data.
The move sounds liketo a few other companies last year, including LinkedIn, Tumblr, and Facebook's Instagram. It shut off access to its API shortly after announcing that it was cracking down on developers who didn't help its bottom line.
We have contacted Facebook for comment and we'll update when we hear back. A Twitter representative told CNET, "We don't have anything to share beyond the notification that's in the app."
It's not just Twitter that Facebook has its eye on. Earlier today, the social network reportedly blocked Yandex's newly launched social search app Wonder from accessing its API, and it reportedly blocked voice messaging app Voxer last week.