Useful map tool to display and share GPS tracks:
http://www.gpxchange.com
Cool Satellite Photos and Topographic Maps:
http://terraserver.microsoft.com 
Good near Metros. Maps and Satellite Photos:
http://maps.google.com 
Amazing 3D Earth Satellite Manipulations:
http://earth.google.com

Local Motorcycle Clubs:
Red Hot Riders of San Diego
Local chapter of the Honda Riders Club of America (HRCA), sponsored by House of Motorcycles, the Southern California Motorcycling Association (SCMA) and the American Motorcyclist Association (AMA) and local District 38.

San Diego Adventure Riders
San Diego Dual-Sport Motorcycle Community

Road reviews of California and the Southwest:
http://www.pashnit.com/ | http://pashnitforum.com/
Cleveland National Forest Road Closures:
http://www.fs.fed.us/r5/cleveland/conditions/
Explanation of San Diego "S" County Roads:
http://www.westcoastroads.com/california/misc_ca_county_19.html