Being a sometime BMW rider, I have looked at the Internet BMW Riders forum. They have an "experience counts" board where you can leave votes, + or -. The voters willing to discuss their experience are then accessible thru email.

http://www.sanfransysco.com/pub/experience.html

 If that doesn't work, go to http://www.ibmwr.org/ and click on "experience counts" under "resources".

Just one idea.

I was thinking of something more along the lines of the Yellow Pages in a phone book. Maybe Rich doesn't know about Tim's Ag Links?

http://www.agri-links.com/link.html