How are web pages categorised?

Drsunil V September 15, 2013
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How to know the category of any webpage? say for eg., www.olx.in says as “free classifieds in India”. So, is there a way to find web pages based on categories and to know their category title?

  1. Hovsep A
    September 15, 2013 at 5:35 pm

    based on keywords/terms that describes the topic of the web page.
    http://www.free-seo-news.com/newsletter443.htm