for investors, ICO can be used as a cheap investment where almost all tokens traded at the time of ICO take place only have very cheap price. of course the price will soar from time to time, this price difference which can then be utilized by investor to get profit. ICO risk is only centered on the existence of an existing crime behind the project. If you want to invest your money in ICO is to ensure the existence of an escrow facility, where there is full guarantee from a trusted third party as a place to deposit investor funds.