07 Sep '12, 4pm

How To: Advanced rel="canonical" HTTP Headers

On February 12th, 2009, Google began to support the link rel="canonical" tag, which was later adopted by Bing and Yahoo, for specifying a preferred version of a URL. It wasnt until June 17th of 2011 that Google announced the support for rel=canonical in the form of an HTTP Header , giving webmasters yet another avenue to provide a preferred URL for non-text/html content-types such as PDF files, that were otherwise unable to have a specified URL using the link tag. In retrospect, this was relatively important news for SEOs, helping to minimize potential duplicate content issues, especially in wake of content penalties waged against site owners in recent years. This nontraditional method to this day is underutilized, and I believe that, now more than ever, SEOs should start leveraging and considering the power of this method for non-text/html content-types. There are a lot o...

Full article: http://www.seomoz.org/ugc/how-to-advanced-relcanonical-ht...

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How To: Advanced rel="canonical" HTTP Headers

seomoz.org 12 Sep '12, 5am

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Useful post on some advanced #PPC strategies - #marketing #advertising

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