I just wanted to suggest a few tools for mapping photos of Brussels.
For example here is a links for the Panoramio tool that shows some of the current images http://tinyurl.com/2mclon
Most of these images are touristy views of buildings and landmarks but it could be used to show mores intersting things. In paticular this might be useful for documeting urban actions happening all over the city.
2 tools for embedding geo tags for Flickr:
Make maps for tags from Flickr:
Some general links: