When attacking an IDS, especially a signature-based one like Snort, my first move is always to overload the network engineers with so many bogus attacks that they can't locate the true vector in the giant haystack.

One can use the same strategy against this type of snooping. Maintain multiple Facebook accounts in one name, some conservative, some liberal, some radical, some tame. Have a bunch of accounts in legal but embarrassing places. Report your location at several places at once. One could even so far as to start rumors about oneself.

Put that much chaffe up in the air and sorting the true from the false would be almost impossible.

All hacking is war, and all warfare is deception.