Re: Bountyhunters.io probably will scam their members. Watch out!!!
I just relax and take easy for this thing, you guys just create new wallet, give private key to them and check if it's legit or not, done lol. 
You dont get the poi point: they shouldnt even think about asking for the PK, otherwise why are they called private?Once again: from November 2018 BountyHunters is an Ethereum dapp. Unlike other bounty platforms. If you know any solution to work with Ethereum or other blockchain without keys - share it with the community, please, everyone would be grateful.
Short likbez: //hackernoon.com/solutions-for-private-key-management-in-decentralized-apps-24f95634be16
Makes sense but this is the first time that users are faced with the issue of " you must first give your private key to receive your rewards" all the time we are taught that asking your private key is like asking for all your coins" your explanation is good but it comes quite late if this explanation comes before the implementation, people will appreciate you for solving this issues, now you have to double your effort explaning the benefits of the implementation.
Thanks for your opinion.
We still are not sure it would help us avoid any accusations, as the word "private key" affects the community like red rag to a bull. It will take some time for people to understand the new system and its benefits. But as we are going to develop our platform as blockchain project (not just an automated tracking system), we are not going to get back to "traditional" airdrops.