I think it is really not a worth doing of promoting their projects and you gonna received a small amount like 50$ and it is really hard to make your time to adjust while working in a regular job that's why I keep working in my regular job while spending some time with participating in bounty campaigns.
These projects do not pay little but it is the market which reduce the price of our bounty. If we do our regular job and along with that we also participate in the bounty campaigns and hold them for longer time till the market is up then we will be millionaire.