TagCloud is an automated Folksonomy tool. Essentially, TagCloud searches any number of RSS feeds you specify, extracts keywords from the content and lists them according to prevalence within the RSS feeds.
As I <a href="http://blog.pietrosperoni.it/2005/04/12/technorati-tag-rss/">predicted</a>, a service that offers rss feed of technorati tag blog entries has appeared.
J. Gemmell, T. Schimoler, B. Mobasher, and R. Burke. Proceedings of the 19th ACM International Conference on Information and Knowledge Management, page 829--838. New York, NY, USA, ACM, (2010)
R. Jäschke, A. Hotho, F. Mitzlaff, and G. Stumme. Recommender Systems for the Social Web, volume 32 of Intelligent Systems Reference Library, Springer, Berlin/Heidelberg, (2012)
C. Cattuto, D. Benz, A. Hotho, and G. Stumme. The Semantic Web - ISWC 2008, volume 5318 of Lecture Notes in Computer Science, page 615--631. Springer Berlin / Heidelberg, (2008)
C. Cattuto, D. Benz, A. Hotho, and G. Stumme. The Semantic Web - ISWC 2008, volume 5318 of Lecture Notes in Computer Science, page 615--631. Springer Berlin / Heidelberg, (2008)
C. Cattuto, D. Benz, A. Hotho, and G. Stumme. The Semantic Web -- ISWC 2008, Proc.Intl. Semantic Web Conference 2008, volume 5318 of LNAI, page 615--631. Heidelberg, Springer, (2008)