Bounty Manager is the most important thing in joining bountys. Better to check who is managing the bounty since there are a lot of Bountys now that dont update their Spreadsheets and turns out to be failed.
Ofcourse, theres a lot of really good bountys but we need to select too what to join. And also we need to check the Team, Whitepaper and their roadmaps and the bounty allocations too.