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URLs and Duplicate Content

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 sites have been “forced” to create duplicate content because of technical considerations and business rules. However, sometimes there are better solutions to these considerations and rules. The concepts of the URLs and duplicate content are intimately related.

Related SEO Tips

Effect Of Duplicate Content
Many people opt to purchase bits of content, or even scrape content from other web sites to help populate their own.

How Search Engine Know Duplicate Content?
Some search engines now look for four types of duplicate content.

Duplicate Content Filter
How to look for duplicate content as a result of site architecture.