www.roger-inc.com isn't a motorcycle site, it's a company that makes software for tracking and managing workouts.  I'm the owner, so I can put it first.

www.gstwin.com is a great source of information on the Suzuki GS500, and other bikes.  It's the inspiration for this site.

www.sohc4.us may be the site I'm looking for!

www.vjmc.org, the Vintage Japanese Motorcycle Club.

www.cycleforums.com, more cycle forums.

www.oldmanhonda.com/MC/MC.html, a site for basic Honda repair information.

www.salocal.com/sohc/tech/carb/carb.htm, a carb tutorial.

www.dansmc.com/MC_repaircourse.htm, another repair site laced with bible lessons.