Recently i took part in couple of bounty campaigns,and i though i can earn some decent amount through it...but it was a total waste...i took part in targetcoin and coss ico campaign and after 2-3 months i recieved the bounty which is worth only about 8 USD including both 
it was just total waste of effort and time
it was just total waste of effort and timeas the others said , joining an altcoin bounty campaigns is risky and needs luck because sometimes the coin or token youd recieve are useless and worthless but some tokens are also started at a lower value but soon theyl pump and value will sky rocket. so iguess the best thing to do is wait for some time for the coins or token to be listed on some better exchanges to see its true value.