Number 6 is always listening and gathering intel so if he's around, he's quietly observing you. He's not so much a gossip as he is a troll, so if you do something to piss him off, you might find some unsavory things being tossed offhandedly into other's ears, or you might see your poorly done portrait up around the ship, rip Stede

If you want to know in specific comment and I'll give you one.