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swodinsky mattprescott Personally, I think Facebook doesn't do much with externally defined data. Most orgs explicitly fear FB learning some competitive advantage and use arbitrary values and other send everything, like the app that sent endless heartbeat numbers, which is equally useless.
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swodinsky mattprescott Because each site and app need to have a Facebook page, which defines their topic and audience, attached, I wouldn't think Facebook needs much more data than a record of view events to act pretty smart about targeting.