placement

I saw this method by a high concept channel - which grows extremely fast - where they have a small "subscribe" button in the right bottom corner and NO logo in the left corner during videos - but they have the logo in the thumbnail, and I thought that they are doing this because the logo on...

How does one go about reaching out to a company to see if they will allow you to advertise their product in a vine or YouTube video? Do companies really reply to emails that say "I'm a Youtuber and I would like to advertise your product as long as you pay me?" That sounds like a silly way of...