I found the AONC before I knew about Flyertalk. I can honestly say it was because of Chris G that I found Flyertalk and most of the travel blogs I now follow, many of which have been mentioned in this thread already. He actively promotes others who focus on travel deals.
I do not think a regular FT member/follower should sign up for his program. I did the 14 day trial to check it out. So far, what I have seen is all information I have seen on various other travel sites.
With that being said, if someone wants to follow just one site, I can see where the Travel Hack Cartel would be useful to them. I personally have decided not to renew the subscription as I get the information elsewhere.
I will say that once you have the membership, the information is laid out in a really, really easy to follow format.