Quote:
Originally Posted by samatha
Handling duplicate content within your own website can be a big challenge.. I suggest you implement the rel="canonical" link element on your pages where you can..It can give you a better understanding of your site and preferred URLs.
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I suggest you implement 301 redirects to fix canonicalization issues causing duplicate content. The canonical link element should ONLY be used as a last resort for handling duplicate content issues due to URL canonicalization issues i.e if you CAN'T implement 301 redirects for some reason. Why? Because ONLY Google has implemented code after nearly 2 years to support it. MS and Yahoo! "said" they were going to support it, but last I heard a few months back Google is the only one to actually have implemented support for it. ALL 3 search engines (and almost every search engine on the planet) support 301 redirects to fix such problems.
And as ChrisHirst said, there is NO SUCH THING as a duplicate content penalty. Penalties keep you from ranking on page 1 even if Google thinks you should be in #1 position. But instead your URL gets forbidden from ranking better than 30, 50, 60, 350, 950, etc. once placed under penalty until whatever got you penalized has been fixed.
Duplicate content can rank in position 1 and often outranks the original version of the content, even if it is copied months after Google indexed the original. It just means that the duplicate content scores lower on those ranking factors that are content based. But the duplicate content can compensate for the low scores on ranking factors based on content by scoring higher on other ranking factors like inbound links, PR, etc. By having more and better inbound links than the original, duplicate content can easily outrank the original.
And if 3 copies of the same content (the original and 2 duplicates) have scores high enough to rank on page one, the version with the highest overal ranking score (regardless of whether its the original or one of the duplicates) shows up on page one and the other two will get filtered out and not shown.
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