I can say 100% that 60% of all bounty is a Scam. The reward for them is either given and the tokens will lie on your wallet forever or do not give at all. Then what's the point of doing this ?
Not 60% i would rather give out 80% of them are total scam. Not directly to be showed but basing on the after results you would really able to identify out that most projects doesnt really have any sense. If you are asking on whats the point on doing this? then we do know this is one of the way on making profits thru this kind of investment and risk factor cant really be avoided on these scenarios and therefore if you dont like to lose up money or end up on holding a shitcoin then its your choice not to invest or risk at all.
It does not make sense for you too to still stay here and join a bounty campaign if you dont believe in ico project as the bounty campaign. I think 80% is too much but thats your opinion and i can not change it. I also sometime feel regret to join a bounty because they dont pay the reward. Sometime give less without any make sense reason.