sounds similar really
Jake, I noticed you're posting, and you're not a member.
We keep certain things to "members only" that have to do with the running of the club, and special sponsor deals that only paid members get. We keep the reef discussion out in the open for all to read and hear. Certain things definitely need to be "members only", but I personally don't think an entire forum should be member's only...but it's their club. CORA and Ohio Reef have a good long-standing relationship, and if they feel that's what is best for their club, then so be it.
Now, if the buy and sell rules changed, I can definitely understand that. We often have people join our forum just to sell some stuff, and never come back. We've had people sell things that shouldn't have been sold...and had no way to deter them from doing it again. Keeping the buy/sell forum as members only would help prevent bad sales. But, we don't do that b/c we feel that our members can sometimes benefit from non-member sales (like people leaving the hobby.)
I just checked their website...and they're making to where non-members can't post new threads in the buy/sell area, but they can reply. Makes sense to me.