As you know IEO trend is growing but i feel IEO is profitable only for those who invested in token sale but who have purchased altcoin after launched they suffer loss majority of the investors ,as the BTT and some other altcoin examples of IEO.
IEOs that have good promotion and good team behind are the profitable ones. There are IEOs that are failing due to bad.promotion and there not unique strategy. We should choose an IEOs that can increase our capital.