Since getting starting with Geocaching, I have been using downloads from geocaching.com and manually loading them on my Pocket PC everyday. It is great having a complete listing while out and about. I am using GPXSonar on my PPC.
However, it would be awesome to be able to use a program that would auto sync geocaching.com changes when I cradle my PPC. I already sync web sites and my Quicken data, so this must be a possibility.
So a note for the programmers out there, I would be willing to pay a fair price for this capability and I am sure there would be others.