Says the person who leaves retaliatory negative feedback

I think it is ridiculous to say that participants will receive negative feedback after "they get paid next". It is either appropriate to advertise for them or not, regardless of the timing of payment for advertising.

I don't think anyone should advertise for betcoin, however I would not go as far as to say that anyone who advertises for them is a scammer, I think anyone who advertises for them would lack credibility in my eyes though.