I don't think negative tag solve the problem and maybe it's not the best way to give it to spammers given the trust system isn't meant to tag spammers. If that's possible, then we should have flagged thousands of spammers on this forum as in bitcoin discussions as well as altcoin discussions. It might be appropriate to tag it as neutral which could serve as a warning to certain managers to be more careful about hiring them, but it's best to report a user's post for deletion and let a moderator judge it.

For other considerations, I agree that each topic should be moderated by the OP to discourage spammers. But since not many OPs do, I think we still have a chance to contribute to the forum by reporting the spam post to a moderator.

By the way, I'm no longer reporting posts on gambling boards so far as it seems the mod doesn't think it's worth deleting even though I'm sure it's spam. There are 100+ of my reports on the gambling board that were not dealt with to this day, so maybe that's the reason I don't do it anymore.