I noticed in the Talk newsletters recently that Devon and Cornwall were classed as 'White Areas'. As a newbie, I was determined to put at least my home area (South Devon) on the map. I have been using my laptop for logging roadways, etc. as it is better suited for driving and I use my PDA for logging tracks on foot and feel I have made good progress because I am able to follow my track logs on the actual OSM maps as I walk. As it’s the OSM map that ‘moves’ instead of my position indicator, it’s very easy to see what details (roads, amenities) are missing – I can zoom between level 10 and 17 to see if road names and other details have been tagged. It's also useful for checking out any errors that have (sometimes) been made.