Linkology - How the Most-Linked-To Blogs Relate

http://www.nymag.com/news/media/15972/

An interesting graph of how the 50 most popular weblogs out in the wild link to each other. Looking at this, one gets the feeling that a side effect of web-based social networking is cliques. How can we avoid it? How does someone new break in? (Robert Scoble has some ideas.)