I think that depends on what kind of bounty works one is doing. For example, I do a lot of translation work. Sometimes they pay me in ether or bitcoin, but most of times they pay me in tokens. Therefore, it is important that their tokens are worth something after receiving them. However, unlike just getting a random box of chocolates, I can increase the chance of getting a nice bounty by doing some basic research. For example, making sure they are not scams by looking at their backgrounds.