Ah this really brings me back to the old bounty days which I do not miss at all!

It never happened to me,,, I did not participate in too many though, I made the mistake of joining projects I thought were cool and did it for MONTHS to realize later they would never pay out (or tokens worth zero). Since then, I just stuck to my single campaign on here. No worries about deliveries and payments, just chat and discuss as I normally do:)