I don’t know whether your fluent in German, but you might want to check out Telepolis, published by Heise. But it might be hard to find it in Flanders. Only a few shop I know in the Netherlands sell it.
On their website they also publish English articles that might be of interest.
Peter Van Dijck 
Fast Company does a lot around social entrepreneurship. Check out the section on the support economy.
I don’t know whether your fluent in German, but you might want to check out Telepolis, published by Heise. But it might be hard to find it in Flanders. Only a few shop I know in the Netherlands sell it.
On their website they also publish English articles that might be of interest.
http://www.heise.de/tp/english/default.html