To know a good bounty we should consider the time frame of the bounty, the amount allocated for the bounty, the manager managing the bounty, and the validity of the project doing the bounty campaign. There are lots of bounties today that offer a reward that is almost non-existent. They are requiring months of work but the reward is miniscule. Better learn how to calculate reward base on the participant number if the bounty offer is in stake form.
all of these didnt rellate with project quality , as bounty hunter we must concern to project quality , is it projects that will build something usefull or useless. alot bounty campaign with short time frame and also huge allocation but at the end it become scam project. personally i dont care about technical campaign but prefer on project quality.