I've spent several hours this afternoon and this evening getting to know JOSM. Most of the effort went into tracing routes and areas from Yahoo Aerial images in the Riberac and Bourg-des-Maisons areas of Perigord, France (24320). Also made a few changes to the map for Risinghurst (which has much better images). I still can't get my head around the interface for Potlatch though.

The bluetooth gps unit I bought on ebay should be arriving tomorrow, so watch this space. I'll certainly be taking it with me when I go to France in two weeks time.