[...] one of legendary staff members started promoting obvious ponzi with avatar/personal text [...]
You cannot expect staff to judge whether or not a specific service with a referral scheme is legit or not.
So there's only two possible solutions to the dilemma of staff sometimes accidentally (or willingly) promoting scam:
1. forbid advertising for staff
2. let them do whatever they like
I personally would opt for 1.
So what can we expect from staff then? If you guys cant tell if something its a scam or not and you cant tell if someone is spamming or posting insubstantial posts, what are you guys for? Im just wondering