Giving away so much discount to their target investors and promising a big exchange.
This are the basic promise of those scam ICO, BUt that are just speculation.
We will always see those scammers at the end if their ICO.
This types of developers will be unmasked after the sale period is over. It surely runaway from the project and won't be able to fulfill their promises. It's best to observe and make sure to have a good research before you place your money in any investment offer that you can see inside the market, most scammers hide from their real identity and keeps pretending like a normal developers around.