Just recently we are beginning to have some Twitter campaign giving hunters reward in btc in the service section. This is one sure way to take off this muster that seem like a cancer called bounty scam.
Only few projects are doing that and mostly gambling sites and news aggregator I love to see projects coming crowdfunding but unfortunately I have not seen one doing that and if one start the trend I don't think others will follow the lead, they don't have money they just rely on crowdfunding.