Most of all I hate to hear about your health, hopefully you can get some relief.
Don, it just seems like yesterday you were mentoring folks on newsgroups and bringing riders together from around the world with the current fad at the time, I think it was called the WorldWideWeb :). I wonder how many people you have impacted over the years, been almost a quarter of a century since I got my first advice from you. Hate to see you give up the site, but you need to think of yourself first for a change.
Hopefully someone smarter than me will step up and take charge and carry on this great group, even if the website goes dark, I don't believe the comradery and friendships you fostered will ever go away.