Hey,
sorry for not having responded to your post on my blog. Thanks for offering me that you sign up on my referral link . It's a bit too late now I guess, but thanks again =].
Hendricius

From this page:
You might want to set your forums to show threads "since the beginning" since (1) it seems you stripped the template from the view options controls and (2) you want to give search engines the easiest path to your threads (even if they are older) as otherwise they would only get there via the archives (archive as sitemap that is).