Everyone thinks of him as a "network marketer" and indeed he was.
But in chapter 15 he clearly shows he used direct mail to build his downline.
And remember Joe Girard, the famous car salesmen who sold some 200 cars each month. He did not own the dealership, he was just a salesman. He also was really a direct mail man. Joe had a mailing list of some 15,000 names that he mailed to every month. And it resulted in selling 200 cars a month.
What did he mail?
It was just a monthly greeting card, like "Happy Valentines Day, I like you. Signed Joe."
It always included his business card.
Keep in mind, they buy from you for 3 reasons only:
1. They like you.
2. They are convinced yours is a good deal.
3. They were going to buy this crap anyway and you just happened to show up at the right time.
I guess, Joe Girard got 2 of the 3 items right. Likeable and Timing.
I guess, Mark Yarnell had to lean on CONVINCING more.