Here is a list of people/blogs/sites dedicated to using a treadmill-desk to walk and work.
The Gold Standard in Reference
Wikipedia – Treadmill Desk
Walking and Working Groups
http://www.officewalkers.com/ – a small group of people tracking their mileage
http://officewalkers.ning.com/ – large social group (229 members), with blog posts, videos, etc.
Blogs/Sites
http://www.treadmill-desk.com/ – the original DIY guide to building your own treadmill-desk
