I live in Leuven. I sometime suse andnav on my Android to add POI. I've made some minor corrections to maps, added some housenumbers, stuff like that. As member of the Leuven crew of the Belgian Pirate Party I am looking into mapping CCTV's in Leuven, as also proposed by User:Cimm here: Leuven#CCTV_mapping. Anyone interested in joining this effort, feel free to contact me!