Although this post seems a bit old, there is some activity going on in the region.
We have a community in Nijmegen (http://thethingsnetwork.org/c/nijmegen/) and next monday there is a meetup in Elst (Gld) (http://www.meetup.com/Smart-Parcs-Development/events/230720009/) organized by SmartParcs.
And there is also the Gelderland community (http://thethingsnetwork.org/c/gelderland/)
It seems that the Gelderland community moved its activity over to partup - why?
Are there no community specific forums in TTN?