An unintended consequence of my adding data to the great OpenCycleMap:

http://www.opencyclemap.org/

and the I just today discovered public transportation map:

http://latlon.org/pt

is that I've been GPS tracking sidewalks, pedestrian routes.

Is there something similar for pedestrian routes as the OpenCycleMap and the latlon.ort/pt map?

And if there isn't, where do I start in finding out where to start learning how to create one? (I don't really want to do it, just really, really hoping someone else has).

Thanks for any help!