ieo , ico ,sto , etc .. these are only a term for a kind of bounty but the legitness of the bounty wont depend on thier kind . ieo is the new kind of doing bounties and many people said that it was more legit but no , not all projects on ieo are the same . there are few that are still bad or not really profitable . many people say its legit because ieo's were conducted by an exchange and not simillar to ico . now due to the drop rate of bounties , not all can earn a profit , only few only because they are lucky and dedicated .