1. Beitzel, S.M., Jensen, E.C., Chowdhury, A., Grossman, D., Frieder, O.: Hourly analysis of a very large topically categorized web query log. In: Proceedings SIGIR 2004, pp. 321–328. ACM Press, New York (2004)
2. Blogdigger. Search engine for RSS and blogs (2005), http://blogdigger.com/ (accessed January 2006)
3. Blogpulse. Automated trend discovery system for blogs (2005), URL: http://blogpulse.com/ (accessed January 2006)
4. Broder, A.: A taxonomy of web search. SIGIR Forum 36(2), 3–10 (2002)
5. Facca, F.M., Lanzi, P.L.: Mining interesting knowledge from weblogs: a survey. Data Knowl. Eng. 53(3), 225–241 (2005)