My main interest about sharing on Google Maps is photos. I love sharing photos on the maps and see it becoming crowded with them! In the area I live in, there is a noticeable lack in photos on the maps. I had a dream to take pictures of every single building and corner in city. Although it is a risky task to take photos in Cairo as people usually do not welcome seeing a camera in their neighborhood, I managed to post about 35 thousand photos on the old service Panoramio, which also appear on Google Earth app and Google maps.
And I am still taking pictures 