9. A web page classification method, comprising: crawling, via a processor, a corpus of web pages and providing the web page to a feature extractor; extracting at least one feature, from the received web page using a feature extractor, wherein the at least one feature comprises one or more of the following: a count of the number of occurrences of a blog-related word in the web page, a first uniform resource locator (URL) corresponding to the host of the web page, a second URL contained inside the web page that is indicative of a hyperlink to a blog site, at least one substring that is a part of the first URL, and whether the web page contains an ATOM feed or an RSS feed, the feature extractor further configured for extracting the contents of the web page and generating therefrom a set of observed values, wherein each observed value is associated with a feature in the web rage that provides an indication that the web page is a blog page, the set of observed values including a first observed value that is generated based on the number of occurrences in the web page of a non-markup word indicative of a blog; and classifying the web page as being a blog page or not based on an evaluation of the at least one extracted feature, the evaluation comprising application of i) a heavier classifier weight to the first URL than to the second URL contained inside the web page, and ii) a heavier classifier weight to the second URL than the substring that is a part of the first URL.
9. A web page classification method, comprising: crawling, via a processor, a corpus of web pages and providing the web page to a feature extractor; extracting at least one feature, from the received web page using a feature extractor, wherein the at least one feature comprises one or more of the following: a count of the number of occurrences of a blog-related word in the web page, a first uniform resource locator (URL) corresponding to the host of the web page, a second URL contained inside the web page that is indicative of a hyperlink to a blog site, at least one substring that is a part of the first URL, and whether the web page contains an ATOM feed or an RSS feed, the feature extractor further configured for extracting the contents of the web page and generating therefrom a set of observed values, wherein each observed value is associated with a feature in the web rage that provides an indication that the web page is a blog page, the set of observed values including a first observed value that is generated based on the number of occurrences in the web page of a non-markup word indicative of a blog; and classifying the web page as being a blog page or not based on an evaluation of the at least one extracted feature, the evaluation comprising application of i) a heavier classifier weight to the first URL than to the second URL contained inside the web page, and ii) a heavier classifier weight to the second URL than the substring that is a part of the first URL. 12. The method of claim 9 , further comprising: forming a set of web pages that are classified as being a blog page; and identifying a top level blog in the set of web pages.