If a search engine establishes that many different URLs in a web site contain the same content, it may not index them at all, in the worst case, if it is done excessively, it may designate the site as a spam site and penalize it.
Unfortunately, many web site have been forced to create duplicate content because of technical consideration and business rules. However, sometimes there are better solutions to these considerations and rules. The concept of the URLs and duplicate content are intimately related.
Post by : w3 Administrator
Post on : 27 August 2011
Title : URLs and Duplicate Content
Category : SEO Guide
Source :