I just tried clicking on threads entitled 'Pick of the Month' and 'Adv-X Post Mortem' from the Community page of the site, but was swiftly told 'Bugger off, it's none of your business!' or words to that effect. I'm assuming those are private threads for the people organising the Pick of the Month and Adventure X, so maybe there's a way to stop those threads from appearing in the 'From the Forums' box.
Whoops! You are right of course. Added a filter so nothing from the secret forums should show up.