So once again my brain started spinning with ideas for building my own solution. (I am a browser application software developer after all.) But...what is already out there? I came upon these 3 browser tools that seem mature enough and promise to meet my needs. We shall see!
First up, RideWithGPS. 2 bicycle enthusiast programmer buddies from Oregon started this 6 years ago and it has become their full time job. One of them rides a KLR650, too. They added a 3rd partner--a sponsored bicycle racer--who handles the non programming stuff. I'm very impressed with what I've seen so far, but need to play with it a lot more to know if it will actually do everything I need. It is definitely bicycle focused with some VERY cool features to support that niche--especially folks who train and race.
http://ridewithgps.com/
They have official screencast tutorials.
This one looks very promising! Started a few years ago by a couple of adventure motorcycle guys.
http://www.tyre.tk/
I don't know much about this except a guy posted it in an AdvRider thread saying it's good. At first glance it looks like just a track sharing system, but apparently it offers tools to create/edit tracks, etc.
http://www.everytrail.com/
If any of you get a chance to evaluate these, please follow-up here!
![Cool 8)](images/smilies/icon_cool.gif)