I think if you want to know a good bounty program or not, you should pay attention to some things like:
1. we need to know about the program, vision, and mission to be achieved from bounty project whether good or not
2. we need to check who runs the prize campaign if the campaign manager is a good person with a good reputation then the possibility of reward campaign is good also we need to see how many members participate in the prize.
3.We can join their social networks like telegrams because a good prize campaign from ICO has a good social community