Accessing Facebook User ID


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: "613234918_10152472246304919"
or from “

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?