It's all depends we choosing a project.. If you want a good quality bounty, just follow the most trusted bounty manager, find project who have a strict rules for participant (strict rules have possibility to avoid who cheat on bounty).
I totally agree. The scammers use their fake accounts in the groups to complain and confused the real people
Yea ~ I've seen so many things like that. There are too many scammers in the bounty campaign and I think the best solution is that every person who wants to participate in a bounty needs to post proof at bitcointalk