Disclaimer: As a teacher and not a business world participant, I haven't really given much thought to networking. I have developed a network of education friends and such, but it's happened naturally because I enjoy these people and their ideas, not because I'm collecting a laundry list of names. So, maybe not much of this article is applicable to teachers.... but I do really like the last line because it reflects my personal philosophy and I do need to remind myself of this sometimes:
"Don't be a networking jerk. Don't keep score. If your interactions are ruled by generosity, your rewards will follow suit."