It is now a lot of Bounty scam, but I do not know what causes it and again a lot of Bounty that has been completed but the edges are scam, but do not ever despair because there are so many Bounty that works and can even make people become rich
Actually almost 80% of bounty now is scam. I don't know exactly why they do that, but I think 1 from reasons is the ICO is scam, too. They just want people attend in their ICO, and pay for token, and after that don't work anything.