I see a lots of ICO with the use of their coins are similar. They raised money, got them and ran away.
The scam of ICO projects recently is due to the effect of the downtrend market. And I think if the market recovers in the next year, the rate of ICO scam and delay will decrease. But now, there is a lot of potential ICO project, Bitcoin Air is the example, I have learned and joined the bounty ICO project, and I think this project is perfect to hold in the long-term.