Among the types of sale made be it ico, ieo and sto, of course if we pay close attention Ieo is a sale that is a little safer for us or investors than ico or sto. For ico, we all know how by 2018 it will be a platform for developers to sell their fraudulent project tokens. While the current sto seems better than ico, but in reality the procedure applied by the two sales concept methods is almost the same, in fact it is only for profit and there is no guarantee of future token development for investors.