The document discusses how to build an agency business through a combination of proactive prospecting and inbound marketing. It advocates for taking a multifaceted approach using multiple online and offline platforms in a consistent, integrated way. While inbound alone is not enough, the document argues that combining inbound and outbound efforts can be an extremely powerful way to generate new business if done strategically and continuously over time. The key is to be proactive, provide value to prospects, maintain consistency in messaging and outreach, and have a realistic plan that incorporates live examples from what has worked for the author's own agency.