I would suggest making bounties a full-time job just when there is no better option. As all of them are extremely volatile, it would be dangerous to depend on the current price of the particular coin/ICO as we have seen most of them crashing in front of our eyes. But if someone is from a country which does not provide any opportunities that will be worth the effort, these people have literally nothing to lose but their time (we can consider that a work, yay!). In this case, crypto can boost an income of the whole family just by making several posts/tweets. It is not for everyone, but there are many people who can improve the quality of their lives significantly, so why not ?