overstated.net has posted summary results from his paper Audience, Structure and Authority in the Weblog Community, which analyzes two different rankings of blog popularity: blogroll links (links to the site front page) and permalinks (links to a specific entry). The summary results show that the two are not highly correlated; while some sites like Slashdot, BoingBoing, and MeFi have a high degree of popularity in both, many do not.

(via kottke)