Up to you!
you give the neg trust carelessly, where is the scam?
Who are you to tell me how I leave trust ratings? You don't even understand the trust system. No scam needs to occur for one to receive a negative rating.
Because, having a neg trust is painful
You want to know who I am? okay, i will to tell you
You sent me a PM with a suspicious looking goo.gl link a while ago. Needless to say I didn't go to it as in the context of the PM it could have been a phishing link - at the time, I just deleted it and blocked PMs from you. I suppose it must have been a link to the Ponzi scheme Richmond Berks then, so I'll now leave you some negative trust as well.
Sharing Ponzi schemes is scamming. If you do it, you have the intention of getting people involved in the scheme, which means that you are intentionally scamming them. The fact that you acknowledge that this is a Ponzi scheme means that this was definitely you scamming people.
Even if it wasn't actually scamming (which it is), that kind of activity deserves negative trust straight away.