i came to OSM because I wanted to create a good map around a small village somewhere in east germany. There were no maps which supported this area. So I walked out with my GPSr an mapped every little path. Later I decided to provide more human resources and had a look to other places I know. My main mapping areas are:
Whereever I can find a missing way or POI I try to add or correct it. It's a lot of fun to see the map correctness growing.