I have been researching SEO and I am aware that Content is King etc. but now i come to a more specific thing, SEO friendly URL, which is widely discussed by public. I also read Google's Webmaster guide where it talks about duplicate content which generally means that a same page of content should not be pulled up by more than one URL.

So I tested what happens to my website on Stack Overflow, but I actually find out the same "issue" (maybe this is not an issue).

The following URLs has same content, could anyone shed some light here?



This is why all SO pages have a "canonical" link:

  <link rel="canonical" href="http://meta.stackexchange.com/questions/94822/is-that-still-a-seo-friendly-url-if-it-has-duplicates">

this link defines the "original", canonical version of the content on this page.

Read more about it on the Google Webmasters Blog.

  • Thanks for that~ I am happy with this answer~ I also find another way to tackle this problem on my website. Insteading of doing this, i am able to do 301 redirect all those url to a canonical url in a programmatic way~ I assume that will achieve same thing, am i right? – NotFree Jun 13 '11 at 3:50
  • @NotFree I'm not sure. Try asking (or searching, I'm sure this has been covered already) over at webmasters.stackexchange.com – Pekka supports GoFundMonica Jun 13 '11 at 9:40
  • Thank you all the same – NotFree Jun 13 '11 at 11:51

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