If someone on LW mentions taking part in seriously illegal activities (in all jurisdictions), am I morally obliged to contact the police/site admin? I don't think the person in question is going to hurt anyone directly.

Speaking of which, who is the site mod? Vladmeir someone?

EDIT: I think I misunderstood and the situation isn't bad enough to need reporting to anyone. He was only worrying about whether he wanted to do certain things, rather than actually doing them.