At a point the team start given excuses to abide by what they promised to do or stop communicating with the community then I can sense the project is scam. How do you determine a project is gone bad and won't fulfil it promise? What criteria do you use ? or you wait for years thinking all will be well ?
for me i will always check the team identity their background about crypto, project development, quality of the whitepaper and their community, that's criteria i use to bounty project so my effort will become worth it and not just go to waste.