You can make huge by participating in the bounty campaigns. You will get rewarded with rewards in the form of tokens which you can further withdraw from your wallet. You get paid for the promotions you do for the different social campaigns that you enrol yourself in. So, your actual money is not used and you make money by just promoting and marketing about the ICO.
it seems to me that the bounty has long lost its relevance in earnings. now it is very difficult to earn at least something on the bounty. basically have to wait a long time, until the token starts to be traded on the stock exchanges.