The scammers are getting better and better at what they do so sometimes it makes it harder for us to vet which ones are real and which ones are bad. Even the most known people can be paid in sponsorship and they could be bought and hype the coin and when you see someone important telling everyone one coin is good usually makes everyone get hyped up about that coin and get into it. Only to realize that coin was a scam coin and they made the famous person tell it because he got money for it.

There are times they lie about who supports their coins and you believe it unless you really research and learn it actually is not true. Scammers get away with millions of dollars from these ICO projects so they sometimes spend thousands of coins just to get more money from you and run away with it.