This forum wasn’t meant for the general discussion of A314 or normal A314 “hits” or anything like that. Per the original a314.com (which is down at the moment), it was a private forum provided as a bonus for those who bought a314.
i.e., when you bought a314, you “joined the club” and got a semi-private discussion forum. Sort of like frequent flyers get their own lounges at the airport. You might sometimes talk about flying at these frequent flyer’s lounges, but generally you just kick back and/or network with similar people away from the hustle and bustle.
It’s also much like the way very successful people have their own facebook like social networks such as ASW (asmallworld.net). Closed environments and tight knit communities like those allow a much higher level of trust.
People on ASW will invite you to their house for a home cooked meal, to private parties, opportunities to rent their apartments in prime locations cheaply, etc. Things you couldn’t do in public without either being overwhelmed or victimized.
Exclusivity is part marketing, sure, but part good common sense, since some success related topics might be best from those without skin in the game.
Aside from the “bonus” social networking aspect, there’s also situations you might get into with A314 you could talk about in a forum like this, but probably wouldn’t want to in the public forum.
For example, you can name names and get very specific about experiences, since nothing here goes into the search engines. There’s quite a few examples from other the years, but a certain situation with one user and Jessica Alba immediately pops into mind. 
I also have quite a few myself with business people, like Richard Branson, Tony Hsieh, Jay Conrad Levinson. I might mention some in public, but I’d find it much easier to share more actual details in a smaller forum like this.