Although this sounds like an impossible way to build traffic, it does have the very handy side-effect of being completely free of spam filters, so when using this as a way to send newsletters to your list or downline, you get 100% delivery, instantly.
It’s more like a messenger service than an email program though, and convincing a downline to sign up to hear your thoughts each week, at the cost of them hearing 13 other’s thoughts as well, sounds like an impossible task. (You only receive 1 message a week from each of the 14 people in your upline.)