Often the question is raised onthe benefits of open data. Who is using it and for which purposes? It seems it is not so easy to respond, because the benefits of open data are often diffuse and indirect. In the past I have seen that it is not always that easy to respond to this question. Some studies, like the one about London transport open data indicates that 80 apps have benefited transport usage , created jobs and generated a return to the economy, not bad. The Brussels based Rockestate is than an exception. It uses open geogrphic data, in a curated way, to created analysis both for the insurance, electricity and property market. Their website explains the sources and possible uses. An article from Bruzz explained it as well. Looking forward to more stories like this one The Brussels Regional open data store over 130 datasets. Check them out and see what you can do with it.