Interesting article on value of blogs as a networking tool, including building social networks – finally, someone who’s NOT trying to sell me blog space, content or tools!!
http://weblogs.about.com/cs/blogforbusiness/a/blogsocial.htm
UPDATE: Bah! The link is gone! I’ll have a search and see if I can come up with it somewhere else… shame, it was the best article out of literally hundreds that I’d read on blogging!