Okay... well here I go.
How do I define business networking?
Business networking (according to the world of Barry) is connecting the dots between personal and professional. It is learning to express items of emotional context that relate to business objectives and leveraging relationships on both sides of the fence.
For me, I look at it as degrees of separation from an relationship asset that I need. I locate individuals that serve as "nexus" points or "hubs" of community involvement, discover personal reasons to interact with them, and expose myself to an already existing life-long network.
As an example... I once used ClassMates.com to locate everyone I went to high school with in a four year period. Without any other relationship, I contacted over five hundred people based upon where we went to high school. Some were people I knew, some were surely people I mindlessly passed in the hallway. Ten years later however, I converted nearly 20% of them and also managed to wrestle myself into helping do a ten year reunion that wasn't even my year.
People, by nature of being human, want to connect. Business networking successfully is about providing just one reason.