Investing in good icos gives huge gains in long term but yes,we see a lot of scams in icos.the best way to avoid risk is ignoring them however if we get to see some good ones with excellent team(popular brands or companies),I think we should consider.because due to the drastic fluctuations in bitcoin coin we see even the good ones going down but a coin or an ico with good structure and support team has no chance to fall down.getting into the details and having some patience to understand leads us to good investment in genuine icos