Brett McGrath was inspired to write an article after reading Amanda Natividad's article, "The Case for Permissionless Co-Marketing." Amanda Natividad is the VP of marketing at SparkToro, an audience research tool that helps you discover people's sources of influence. "Permissionless co-marketing" is promoting/sharing/re-tweeting someone's content, because you enjoy it and share similar philosophies. Promoting someone's work (without asking for anything in return), leads to genuine relationships, better collaborations, and strong leads.