Its true need to think and check the campaign if is good or if there will be bring nice contirbution in crypto. We need to review about the project before we participate,read everything,ask everything in the team so you will be decide if that project is good to promote and to support.
Due to number of scam projects we need to be careful when choosing where to participate.
Conduct a research and dont trust easily. Check every details that can say that its a legit project.
Thats why nowadays its better to join in btc paying campaign rather than bounties to have an assurance of getting paid for your effort.