There are so many scam bounties because of money. We can't really assure how we can know that the bounty is a scam. Before joining bounties better to check the ICO projects website, white papers and all social media account that might give us information about the bounties.
yes we can predict how the fate of ICO in the future by looking at the concept and white paper. telegram is also very important to see if the followers of ICO a lot, because if many followers then likely many investors are interested and invest in ICO. in choosing ICO be careful not to follow bad ICO. all aspects can determine the results of ICO.