Accessing Facebook User ID


#1

Thanks Jason!
Another question - from looking at a live stream preview, (simply facebook.message contains “brazil”) it’s clear that the facebook Id is hashed.
BUT - it is still available by taking the number before the underscore from either:
facebook.id: "613234918_10152472246304919"
or from
interaction.link: “http://www.facebook.com/613234918_10152472246304919

Is the Id likely to remain available in this way, or will it also be hashed in the future?
Is it essentially “cheating” to filter by Id in this way?