You must create a log in in order to upload or download GPX files. Please take the time to clean up the tracks you upload to the site. You appreciate downloading well annotated and clean tracks so pay it forward and upload clean tracks also. Link up ride reports in the map description.
A Motorcycle GPS App for Android was just released. Search "Dual Sport Maps" in the Android Market.
You can search the site geographically, so take a look by clicking on the GPX Files link above.