What did you learn in altcoins, those projects didn't paid bounty hunters even after successful. We can gather information by all unpaid bounties and with reasons why didn't paid. For us this is very hard when our good research is successful but admin cheated to bounty hunters. List why didn't paid, your experience and history about unpaid projects
There is no point in gathering those informations because those scammers are very tricky. We users have agreed to their terms of use upon signing up. But i do hope these scammers will stop and hooefully we will have a law against scammers online.
And most of the participants doesnt really care if the campaign they participate is scam they just manage to participate in a new campaign and forget about the rewards and wasted time happen promoting that campaign . Gather any information about the scam campaign doesnt help since we are in different laws and countries .