I believe that despite the large number of scams, there are still good campaigns in which you can safely participate. In general, the payment is made according to the results of the token sales and sometimes it turns out to be very small.
Of course, there are still successful bounty campaigns, I also believe. It would be nice before choosing a bounty campaign, we must do research first. Although we are difficult to distinguish bounty campaign that will really succeed and bounty scam.