ICO scammers are professional and smart individuals also. They do more thorough researches than most of investors and they are really expert in what they do. So to avoid those scammers i think all the suggestions being posted in this forum should be considered by the future ico investors especially the due diligence in researching all the aspects of the prospective ico. And yes knowledge in crypto currencies would be helpful for us to be able to assess the legitimacy of a certain ICO.