Bad news, Barton,
You're stuck on the list forever. Hah, hah!
Actually, list instructions can be found here:
http://www.bikelist.org/
So, go ahead, take the initiative and quit. (Or do what I do--turn off the mail delivery option and just peruse the archives when you have time.)
Regards,
John "Often types and proofreads indifferently" Taglia chicago