We don't know what is the real project and scam project, because as of now 90% of all ICO are scam. The one thing i really sure is before you trust on the project, you may know personally the team or meet up them to identify if the identity are real or not and they explain to you the real purpose of the project.
90% are probably overdoing it. I hope. although recently I have completed 4 campaigns and have not paid yet. everyone says they will pay soon, but another month has passed and nothing. I hope that these projects are waiting to strengthen the market, but who knows?