[throwaway9d0291]

> There's no way to provide access to the social graph in a privacy preserving way. It's not okay to allow a third party to access the data your friends have shared with you without your friends consenting.

If the API is open and there's forced interoperability, the client device can call the service's API directly with the user's own credentials. No need for a third-party middleman, so no need to give a third-party access to the data.

It can work the same way IM applications like Pidgin work: one app, multiple accounts.