At goose24 we're working on a waypoint archiving program that will be open source (GPL) software. It will include a feature to load/save waypoints to a "waypoint exchange format" that could be used to share waypoints in email or on web pages.. the first release is probably a long way off, though. i'm even hesitant to mention it, because we've only just begun and there are some other projects that take precedence right now, but I wanted to let you know that there were people out there working on a completely free and gps-independent software program to do this sort of thing.
i don't know if geogaching.com would be interested in using this format to make waypoints for the caches downloadable, but perhaps someday that sort of thing will be a reality.
like i said, i'm hesitant to even mention it right now, but just wanted to let you know that the vision was out there...
dave
Dave Seaton dave@goose24.org http://www.goose24.org