I would recommend you to always think that every ICO wants to scam you out of your money. Believe it from deep down your heart. And then, inform yourself about everything they do and see if they can really turn around your belief, that they only want to scam you out of your money. If they have a very credible idea that can turn the world around, a credible team with smart people on it, they can still take your money and run away with it. So be very careful about it and always expect the worst when you deal with ICOs.