Personally, I don't really buy into this so-called influencer marketing. Then again, I just don't personally buy into social media.
yes this is not the proper way on starting an ICO project. on those social media. But, that influencer marketing could be a good strategy to encourage possible prospects in private token sale. This may help to reach directly the softcap for the project to start.
This influencer marketing is related to PR officer of the certain project.