Eigenfactor.org Upgraded

Carl Bergstrom and Ted Bergstrom have upgraded their tool Eigenfactor.org, a free influence ranking search engine for "for evaluating the influence of scholarly periodicals and for mapping the structure of academic research." Eigenfactor.org is sponsored by the Bergstrom lab in the Department of Biology at the University of Washington. Eigenfactor.org provides influence rankings for over 7000 social science and science journals (those listed in the ISI database Journal Citation Reports) as well as for over 110,000 reference resources such as books, newspapers, and popular magazines.
From the website:

The scholarly literature forms a vast network of academic papers connected to one another by citations in bibliographies and footnotes [1]. The structure of this network reflects millions of decisions by individual scholars about which papers are important and relevant to their own work. Therefore within the structure of this network is a wealth of information about the relative influence of individual journals, and also about the patterns of relations among academic disciplines. Our aim at eigenfactor.org is develop ways of extracting this information.

Eigenfactor.org is accessible at http://www.eigenfactor.org/