Some of the things I took away from Sean's presentation are:
There are no hard and fast rules to "networking". Passing out cards and introducing yourself to every musician in the cities isn't necessarily going to generate work. You have to approach every situation appropriately. If you want to play at the triple rock it is possible that drinking with the sound-guy until you vomit, and then sleeping on the floor of their apartment may be you best career move. It's about developing relationships, so being authentic is key.
Get as knowledgeable as you can about as many aspects of the music business as you can, so that you can at least make an educated guess as to what is standard and what may be a bad deal. Go off of your "gut feeling" but then do your "due diligence" and research before coming to any under-informed decisions. If someone presses you to make quick uninformed decisions, that may be a gauge of whether they are a legit business person or not.
Take functional aspects of your strengths and apply them to your weaknesses. For instance, talking about theory is a strength for me, but going to gigs and meeting musicians can seem awkward and is a weaker trait of mine. So one thing I can derive from my strength is that I really enjoy talking about something I am very knowledgeable about, which could be applied strategically to networking by asking people about things which they are particularly knowledgeable about. They will presumably enjoy talking to you, and you can learn things from them simultaneously. This is obviously a fairly abstract concept, and is useful in developing new strategies for fortifying your weaknesses.