What is this describing? First-party apps with Facebook integration and/or OS features connecting to Facebook? The leakage of Facebook information onto MS/Apple/Blackberry servers would be concerning, but having Microsoft software connect to Facebook on a user's device sounds harmless (to the extent we trust MS/Apple/Blackberry software to not leak information so accessed). Right now I'm giving Apple similar access t…
As stated in the article: Facebook acknowledged that some partners did store users’ data — including friends’ data — on their own servers. .. which meets your definition of concerning.
It will likely be some time before we learn the extent of all of these agreements and how the data was used.