Suppose if there are a number of ICOs started for different coins by anonymous developers then how can we find that which one the legit ICO and which one is scam ICO?
Knowing if an ICO is legit or not is like a trial and error. There are also things that you have to consider upon joining. You should do a series of research to make sure if the plans that they have for the future is possible for them to reach. You should also check the activeness of the developers that they have.