Previously ICO's are good to invest especially when some celebrities are getting involved to promote their investment. but as the time pass by, Its getting sour because most ICO's this days are scam, You had to scrutinize carefully the ICO before you can find a trustworthy project:)
The mistake virtually most new investors usually make till date is to think there is a lot celebrity endorsements has to do with the success of a project but I would rather pay no single attention to that at all.
That to me has always been a way to just simply draw people or investor's attention to the project and there has been some project in the past few months that even with some celebrity endorsement still ended up scam and the devs are being tried or have been tried already.