Oh, connections can be important. 3 out of the 4 jobs I've had since grad school have been through people I knew and the 4th was an on-campus interview. But none of the subsequent jobs were B-school related in any way though one was peripherally related to undergrad.

I was mostly reacting to the meme that the only reason to go to B-school is the network and in my experience that's not really true and I'd discourage someone from attending for that reason alone.