Facebook had been working with Instagram for weeks before its acquisition of the start-up on the integration of Open Graph into its social photo sharing app. The two companies partnered on helping Instagram roll out Timeline integration to groups of users in deliberately managed stages without any user friction, according to Inside Facebook, which made the discovery. When an Instragram user completes the action ìtook a photoî it is posted to Facebook and, in particular a user's Timeline, without requiring re-authorization.
