misleading tag name
Wouldn't content_type ord board:content be better? board:type would be better to describe whick kind of board it is e.g. a dennert fir tree or plate or something else. Ogmios (talk) 12:38, 12 July 2014 (UTC)
new key "building"
Lately I've seen a lot of information board with content about (well known) buildings in the area or (well known) single building. What about adding board_type=building?