This month at Writer Unboxed, I discuss one of the invisible aspects of your platform that directly impacts your success: Your relationships.
I can confirm, after launching my e-book last month (The Future of Publishing), that I couldn't have spread the word to half as many people without the support of many people in the writing community. Two key supporters were (are!) Christina Katz and Porter Anderson.
So, you need trusted relationships to amplify your efforts. Go read more.