Facebook's published US application 20150100431
Facebook's '431 is a continuation of a continuation, filed June 15, 2011.
The first claim of the '431:
1. A method comprising: receiving first user data from a first service provider, the first user data comprising a user identity of each of a plurality of users of the first service provider; receiving second user data from a second service provider, the second user data comprising a user identity of each of a plurality of users of the second service provider; matching users of the first service provider and the second service provider using the identities; combining the first user data and the second user data to create an aggregated user profile for one or more users of the first service provider and the second service provider that have a matching user identity; selecting a content item for the viewing user based on the aggregated user profile of the viewing user; and sending the selected content item for display to the viewing user.