I heard that some bounties fail to pay participants at the end of work. Considering this senerio, how can one know which bounty is a good to participate in?
You have to see the founder and team of the Bounty, sometimes many of them are fake, just want to deceive investors, overall you have to check the web and their white paper well, many things to learn in the assessment of the Bounty.
I realize a few bounties are currently successful and honest, the rest are problematic of all.