FB is where the "community" on a challenge support each other, and Marty's information, videos, etc is shared. He has public FB pages, and then a new one for each challenge, so yes. Of course, many of his long, super detailed blog posts are on the website. My FB is not my actual name nor profile, and the email used is one created for Craigslist and FB, not used anywhere else.

The DDF Program is a one-time, self-directed program...you get everything needed to do it yourself, without the support, FB not needed for that option. That's how I started, only now decided to add the Challenge.