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Fix Cross-Domain Duplicate Content 
By: Jordan McCollum 2009-12-17 Back in February, Google, Yahoo and then-Live premiered a solution to on-site duplicate content: a canonical URL element that let you designate which version official word was... ...of course, that the element is still just one signal.) Unfortunately, that element only worked within a single domain"if you had your content copied on another domain, no joy. Until now. Yesterday on the Webmaster blog, Google announced a new cross-domain canonical URL element. Now, if you have the same content on two domains, you can indicate to search engines which one is the preferred URL. The element uses the same syntax as the prior version, but now you can indicate the canonical URL is on a different domain: <link rel="canonical" href="http://www.NEWexample.com/product.php?item=swedish-fish" /> As part of the announcement, of course, they review other ways to handle cross-domain duplicate content, including 301 redirects. However, if you cant use server-side redirects, the cross-domain canonical URL element can help search engines find the new content and possibly use that new URL in search results. In the questions sections of the post, they note that you cant use the cross-domain canonical URL element to just redirect search engines to a new root site (its for 1:1 mapping of substantially similar pages), and that pages with redirected cross-domain elements should not use meta noindex. Comments Tag: cross-domain Add to  Del.icio.us |  Digg |  Reddit |  Furl Have a bookmark! -  About the Author: Jordan McCollum is a staff writer for the popular marketing blog Marketing Pilgrim. She has worked in search engine optimization with clients including 3M, Little Giant Ladders and ADP. After graduating from Brigham Young University, Jordan joined the SEO copywriting team at the Internet marketing firm 10x Marketing. After 10x closed its doors in December 2006, Jordan became a freelance writer and Internet marketing consultant specializing in SEO. She also has extensive experience with web analytics, conversion rate enhancement and e-mail marketing. |
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