DJ Khaled and Mayweather had an issue about shilling an ICO. And other celebrities hyping or promoting scam coins. Who would actually rely on their words? If you're listening to celebs then you are not ready for this type of market at all.
Many celebrities have no idea what they're advertising.It's all about fees.Due to the very bad fees at ICO, this method will attract a lot of investors.I think that this is currently the best marketing ploy.Any blogger will not be able to attract such a scale of people as any celebrity can easily.