It's hardly an exploit. All it really is is a feature that this guy happened to disagree with, and he demonstrated his disagreement by showing how it could be u

It's hardly an exploit. All it really is is a feature that this guy happened to disagree with, and he demonstrated his disagreement by showing how it could be used to track your location on a map. To "exploit" this, you the user would have to proactively send chat messages over a prolonged period of time to the "attacker," so I hardly call this an attack.