Above from March 30, 2013. I previously did a map in 2011.
Basically the Government of Canada network (blue, on the right) gets larger and even more densely connected. That network also includes people from the City of Ottawa and people working in Ottawa. (Ottawa is basically a small and tightly connected town, in and out of government.)
The other two big clusters are still NRC (the National Research Council of Canada, where I work) and library/scholarly publishing/science.
It's interesting that NRC is still very distinct from Government of Canada. There are however more connections bridging the gaps between the three groups. Here's what it looked like in 2011:
January 31, 2011 LinkedIn maps my connections - I analyse the meaning