It's better to earn real tokens, not fake ones as most of these ICO's are scams and they promise in any method to scam people. I joined so many Airdrops, bounties, but only 2 to 3 paid me and they were in less price. I wasted my time by promoting them on Social media sites.
I suggest you to discover much, but after all these also they don't pay anything for us.
Don't be so disappoint because your not the only one who experience that. Much better to make deeply research when you joined to bounties because it will help to you. Not all bounties is scam because there's a lot of project that have a good future.