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  1. #1
    Newbie
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    April 20th, 2011
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    Cannonical Issue?
    What is cannonical issue?

  2. #2
    Newbie
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    April 13th, 2011
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    Canonical issues
    Canonicalization is the process of picking the best url when there are several choices, and it usually refers to home pages. For example, most people would consider these the same urls:


    • www.example.com
    • example.com/
    • www.example.com/index.html
    • example.com/home.asp

    But technically all of these urls are different. A web server could return completely different content for all the urls above. When Google “canonicalizes” a url, we try to pick the url that seems like the best representative from that set.

  3. Thanks From:
    kse

  4. #3
    OPM and Moderator Chuck Hamrick's Avatar
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    April 5th, 2005
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    Park City Utah
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    16,646
    Concatenate domains means to have all of the above examples resolve to one domain generally IANA — Example domains. In the past Google has given different rankings to:

    IANA — Example domains
    example.com

    To get the best ranking you join them.

  5. #4
    ABW Ambassador 2busy's Avatar
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    On *nix host you can correct this problem in your .htaccess file. Add these lines using your own domain name:

    Code:
    Options +SymLinksIfOwnerMatch
    RewriteEngine on
    RewriteBase /
    
    rewritecond %{http_host} ^domainname\.com [nc]
    rewriterule ^(.*)$ http://www.domainname\.com/$1 [r=301,nc]
    
    rewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /.*index\.html\ HTTP/
    rewriteRule ^(.*)index\.html$ /$1 [R=301,L]
    for obvious reasons you would change the filename extension from
    index\.html
    to
    index\.php
    if that is what your index page name actually is.

    The code above will cause any of these URLs:
    http://www.domainname.com
    http://domainname.com
    http://www.domainname.com/index.html
    http://domainname.com/index.html

    to resolve to http://www.domainname.com/

    This is not a solution for Windows hosted sites.

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  7. #5
    .
    Join Date
    January 18th, 2005
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    In 2009, Google also introduced a "canonical" tag, so that if you have multiple variations of a page, Google will know which version of the page to index organically (and to avoid duplicate-content penalties).

    For example, some merchants (and some publishers) create PPC-Search landing pages where most of the text is the same but each version emphasizes different specific keyword (used in the page title, headlines, etc.). This can greatly boost your AdWords "Quality Score" but Google's organic algorithms would either (at best) choose randomly from the variations or (at worst) would detect duplicate content and impose penalties.

    The canonical tag can also be helpful if you don't have the ability to modify system files to designate which URL variation will be shown in Google organic search results, or if your hosting account doesn't support redirects.

    Note that the "canonical" tag is treated as a "suggestion" or "hint," which Google's organic algorithms might still overrule.

    Last edited by markwelch; April 20th, 2011 at 09:40 PM.

  8. #6
    Newbie
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    April 20th, 2011
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    Thanks Guys, Is it any big problem for my site if i have not fixing this issue?

  9. #7
    ABW Ambassador 2busy's Avatar
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    Thanks Guys, Is it any big problem for my site if i have not fixing this issue?
    Not unless you are trying to promote your site and be seen in the SERPs.

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