No guarantee at all since they doesn't hold the funds of the investors and the only thing managers can do is to sympathize their participants if there's a scam happened. Maybe we should assume that always we cannot get a huge success upon joining on some bounty camps but lets define it as gamble and we may have a high chances to earn huge if our camp pays huge.
Managers has the job to analyze their potential campaign to see whether those campaigns are scams or not.
Even though there are no 100% fool proof method to do this, most scam campaign can easily be seen from their whitepaper, lack of communication, etc.
An experienced manager has enough campaigns on his/her previous work that they know when a company smells fishy.
Famous managers are not guaranteed to get a good bounty. we still have to analyze the performance of managers.
disappointed with one of the managers and he did a great cheating.
Do you mean him?
I thought it was revealed recently that his account were bought.