In order to avoid bounty scams you need to consider 2 things:
1. CHECK THE PROJECT - you need to do research about the bounty, the project team, the whitepaper because some might just copy and paste it, the advisors, roadmap, bounty pool and ofcourse the founder you need to be a good observer, check their background because sometimes by just merely observing and reading you will know right away if the bounty is a scam.
2. CAMPAIGN MANAGER - the one that you should always consider, because if the bounty manager is scammer then the bounties itself is a scam, and it is really obvious if the bounty manager has a negative trust then surely he or she is scammer, one thing to consider also is the rank of the bounty manager the higher the rank the higher the legit factor, you can always do research here there are many list of legit and reliable bounty manager and the list of all bounty manager scammers.
thank you for your kindness!
hope it helps!
more power!
And you think this advice will be followed by people who are always on the lookout for the bounty announcement threads they want to enrol all of their alts? (a quick check on the reputation subcategory of those abusing the bounty campaigns will give an insight on what I am saying where an individual can enrol up to 30 alts sometimes I wonder if its a machine doing that) and the promoters are more concerned about how much they would raise in their pre-ICO and ICO with less focus on the quality or campaigns which means before a genuine applicant is through with those findings, the list is already full.
The only easy one is the campaign manager which is even not a guarantee as we have seen reputable managers fall short of expectation at some point. Do your research if you are convinced put in for it, and it if not pull out and stop blaming someone else, the mod, DT members, popular senior guys, or even the global administrator of not doing enough.