While this site was down I stumbled across a new message board: Mt Whitney, The Sierra Nevada and Beyond.
According to it's administrator, Richard Piotrowski, it has been created as complimentary site that can be used for people to post their off-topic (not directly related to Whitney) subjects.
Here's the link
http://www.mt-whitney.info/ It's just starting up, but with all the interest in this area I'm sure it will see lots of use soon.