What this article teaches you is that if you produce something that is shareable and interesting, driving traffic to it is MUCH easier. You can use social media, you can run link building, you can share it on niche communities and nobody is going to ban it or downvote it. Actually, if your front end is great value, people will share it around without you asking. Then all you have to do is offer a free downloadable resource in this piece of content (that does not decrease its shareability as it's more free goodies) and THEN start selling via email follow up.
Many companies, such as J. Crew, Express Jet, 1-800-flowers, and even the IRS, outsource customer-service operations to third-party companies who then hire home-based workers or "agents" to take calls and orders. When you call 1-800-flowers, you may be speaking with Rebecca Dooley, a retired police officer and employee of Alpine Access, a major call-center service. When you dialed the number, your call was automatically routed to Rebecca's spare bedroom in Colorado.