In the Amsterdam district Slotermeer locals use an purpose made app to map (un)healthy spots and behaviour. This helps the local government to fine-tune measures to make neighbourhoods more healthy and social.
Is this green field the place to play soccer or just to hang around?
http://nos.nl/artikel/2151352-bewoners-slotermeer-appen-over-gezond-en-ongezond-gedrag.html
One person thinks this is smart