If you want to be safe, look for the bounty of the projects listed on the exchanges. For me to find good bounties I will be looking for good bonus managers, and bounties are appreciated by the community.
The manager who managed matters a lot but if the token already listed on the exchange site will bring more fundamental support and guarantee to the hunters to get their payment. This is a good point to be used to determine which the best project that we can participate on it.