Interconnected is by Matt Webb, who can also be found at S&W.

This is his email address, and the syndication feed for this weblog is here.

Also on this page are search, the archives and a sitemap.

22 April, 2003:

Short (good!) Introduction to Social Network Analysis, covering the various metrics used to talk about people in networks, and the network itself: degrees; betweenness; closeness; boundary spanners; peripheral players; network centralisation.