Google, Yahoo & Microsoft Unite On “Canonical Tag” To Reduce Duplicate Content Clutter
Feb 12, 2009 at 3:55pm ET by Vanessa Fox
The web is full of duplicate content. Search engines try to index and display the original or “canonical” version. Searchers only want to see one version in results. And site owners worry that if search engines find multiple versions of a page, their link credit will be diluted and they’ll lose ranking.
Today, Google, Yahoo and Microsoft (links are to their separate announcements) have united to offer a way to ...