Now I participate in NagriCoin Signature bounty and I hope that this project will succeed. I think that you should choose a bounty program to join the same way as you're chosing a project to invest in. Maybe you're not investing money buy you invest your time. What project would I support financially? For sure, the one which has lofty ambitions. If you see an ICO which is solving an important problem, its a good sign. That's why I've chosen this project.