But he has the same amount of money and goods before and after my conversation with him.
True. He still has possession of exactly the same amount of money and the "same" goods.
It basically didn't change anything except for the fact that i made this information public.
Untrue. The
value of his goods decreased as a direct result of your deliberate actions.
More importantly he received that information (consideration) via admittedly intentional deceit with the intent to deny him his legal rights, which is the legal definition of fraud.
One other note, I see a few people here agreeing with my points, but not nutting up to support the flag. If everyone is going to be spineless and only support popular flags this system is going to fail. The trust system can not be a popularity contest or it will fail. Nut up gentlemen.