http://www.ducatimonsterforum.org/ - Ducati Monster bulletin board

http://www.mcnews.com/ | Motorcycle Consumer News | small zine with no ads - expensive but (apparently) unbiased

http://www.ironstoneventures.com/ | Ironstone Ventures, Ltd. | motorcycle training - I took their beginner course a few years ago.
http://www.newenglandridertraining.com/ - day-long rider skills training courses

http://www.tonystrackdays.com/ - you can pay some money and ride your motorcycle on a racetrack.

http://www.rycamotors.com/ - kit bikes that turn old Suzuki Savages into cool little cafe racers or standards.

http://richoliver.net/ - 2-day dirtbike training course in CA
http://www.millermotorsportspark.com/riding-school/yamaha-champions-riding-school.html - Yamaha Champions Riding School (Utah)
http://www.superbikeschool.com/ - one and two-day rider training school