There's your answer. If you care about selling, and you're not selling, then youtube hits and facebook likes and blogs obviously means nothing.
It's funny....it's never been easier to promote one's self. The internet has shrunk the globe to the size of a computer screen. Facebook, youtube, twitter, etc makes it simple to potentially achieve levels of exposure that were damn near impossible before. You can potentially get fans literally on the other side of the world......Yet still no one makes any money or has any actual fans. Why even bother?