In my years of experience with bitcoin there is only one effective way to avoid scammers. In joining ICO even if you do your research you will not know that they are scammers until the ICO is over. Even if how many preparations we do or make in the end we still end up being a victim to scammers. The best way to avoid scammers is to no invest your bitcoins. Just hold it in your wallet and hold it for a long time and when the price is right you can sell them and you will have a good profit.
What youre imposing here is for long term investors but what about those making a living by joining ico,investing in projects?this is what OP is addressing for them to avoid being a victim of this scammers
To OP you have lots of experiences and knowledge about this damn scammers,hoping that this post and advices my lead to lessen the poor victim ,and may they knowledgeable upon this bad doings