*investigate on the team and the bounty manager.
I once saw a project managed by a newbie with only 3 activities. Not really saying that it's Gonna turn of fuckin bad but to be safe it's OK to go for bounties managed by established experienced bounty manager and also watch out for bounty organised by managers with red trust it is fuckin stated there to trade with extreme caution . Also the quality of a team tell the outcome of the bounty. A bounty organised by shitty team always turn out shitty or is a scam
Most of projects will be scammed once they can't pay you on your work. Others also are posted by newbies so its too scared to enter if your concern regarding wasting of time. That's why there are called Bounty Managers, I was before collecting bounties as long as i could but now only trusted people or higher ranks will be qualified for me to enter in that project. If they are a good project then they should as someone to coordinate to promote the project. Not only posting by someone.