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Thread: Mobile + Web version of site : Duplicate content?

  1. #1
    First time poster!
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    Default Mobile + Web version of site : Duplicate content?

    Hi all
    I manage a small site and we are currently both mobile and web enabled, we have device detection capabilities and currently switch your CSS depending on what browser you are using.
    We are now going to build out a full scale website which will probably have slightly different content (but still very similar), and we'd like to keep the same url for both mobile and web traffic.
    So in an ideal world:
    from pc browser: see mydomain with web content.
    from mobile : see mydomain with MOBILE content.

    So my question is, does google recognise that you are serving a mobile site, and then send googlebot-mobile only, and then when it's web bot gets to your page and you serve them the web version, will it be considered duplicate content?

    Any help will be appreciated.
    Thanks
    Tim

  2. #2
    Senior Member andymoore's Avatar
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    Sadly it seems that no matter what you do Google still aint' getting it right when it comes to serps and thematic consistency over two urls.

    I've a .com which states in the metas that the mobile version of that page is over on the .mobi

    Sometimes the .mobi is ranking in desktop search and sometimes the .com is ranking in mobile search.

    I've decided to do away with the .mobi on a site I'm doing now, I'm just going to detect mobiles from pc's and show one one version and the other the other version, that way all the URLs are the same and there's no conflict and nothing that Google can misunderstand.

    As for duplicate content, a lot of people misunderstand this.

    Duplicate content means pages on your site that are identicle, imagine you're in Google's shoes, which do you return in the serps?

    Duplicate content off site doesn't matter, if it did there would be only one core news site and only one core lyric site on the planet.

    So.... What I'd suggest is stick to your ideal world scenario but allow users to switch versions if they wish.

    Best
    Andy Moore
    i don't do tech / mobi anymore - why do something that annoys and stresses lol

    New: Most Minty Tooth Oil - GMO and fluoride free toothpaste alternative

    100% natural botanical extracts to whiten teeth, freshen breath and strengthen gums
    Used, recommended and sold by Harley Street private dentists

    My other websites:

    http://sellyoursongs.info/ - Sell Your Songs using Mobile Payments
    http://detectmobilebrowsers.mobi/ - Detect Mobile Browsers
    http://andymoore.info/m-commerce-php/ - M-Commerce PHP (sell stuff on the mobile web)
    http://locationdetection.mobi/ - Detect a mobile browser's latitude & longitude
    http://andymoore.info/mysql-lyrics-database/ - Half a million lyrics


  3. #3
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    Duplicate Content Means having Same Content on same website, for .mobi and .com version You can use Google Mobile Tags which helps Google To know which content is for Mobile user and it will not index it in desktop search. Google has already issued a Mobile Sitemap Protocol and Mobile tag Standard to avoid such situations...
    Google crawls and indexes sites specially designed for Mobile phones and other such devices and include it in its Mobile web index. In-fact Google even adds a new site whenever a user browses it through Mobile Search Engine or directly visits the site through browsers.

    have A look to this article: seo-smo. net/ 2010/01/01/ what-is-a-mobile-sitemap/

  4. #4
    Senior Member ChinaMobi's Avatar
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    When you said Google Mobile Tags, do you mean <loc>, <priority>, <mobile:mobile/> etc?

    In your artile, you said:
    Google’s mobile Crawlers will always use Request Header with HTTP “Accept” header to suggest your site
    What and where do I include in my HTML file? Thanks for your help.

  5. #5
    Mobility Regular morse's Avatar
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    Try searching for something called canonical tag. It will sort quite a few things but the problem of web pages showing up for mobiles and mobile pages showing up for pc, still remains a problem.

  6. #6
    Senior Member andymoore's Avatar
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    The best way around the problem is to have your pc site detect then redirect mobiles to your mobile site, also have your mobile site detect and redirect non mobile visitors to the pc site.

    That way you can get two sets of results in the serps but depending on the device being used they see only one site.

    Google seems to do what it wants sometimes so I reckon in this case it's best to nudge it in the right direction with detection and redirection.
    Andy Moore
    i don't do tech / mobi anymore - why do something that annoys and stresses lol

    New: Most Minty Tooth Oil - GMO and fluoride free toothpaste alternative

    100% natural botanical extracts to whiten teeth, freshen breath and strengthen gums
    Used, recommended and sold by Harley Street private dentists

    My other websites:

    http://sellyoursongs.info/ - Sell Your Songs using Mobile Payments
    http://detectmobilebrowsers.mobi/ - Detect Mobile Browsers
    http://andymoore.info/m-commerce-php/ - M-Commerce PHP (sell stuff on the mobile web)
    http://locationdetection.mobi/ - Detect a mobile browser's latitude & longitude
    http://andymoore.info/mysql-lyrics-database/ - Half a million lyrics


  7. #7
    Mobility Regular nombre's Avatar
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    andy

    i posted another thread because of this article where the designer is using css3 styles (media queries) to design for the width of the device, it's pretty dynamic

    the article is at: http://www.alistapart.com/articles/r...ve-web-design/

    how does using css3 "media queries" differ from your javascript detection

    what are the advantages and disadvantages ?

  8. #8
    Senior Member andymoore's Avatar
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    It isn't JavaScript, it's php so server side meaning it can jump through hoops and do backflips!


  9. #9
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    regrading duplicate content in desktop sreach results...you can Block your mobile site from Googlebot, allow only Google’s mobile Crawlers via Mobile tags in sitemap.

    Request headers from Google's mobile crawl will always use the HTTP "Accept" header to explicitly tell your site that it should return documents with mobile content types, if available, rather than standard HTML. If your site respects this standard, your site will return mobile content correctly to our mobile crawl.

    Make use of the robots.txt file on your web server. This file tells crawlers which directories can and cannot be crawled. Make sure it’s current for your site so that you don’t accidentally block the Googlebot-Mobile or Googlebot crawler.

    Yes, search results return desktop results to mobile users, but they prefer mobile-optimized results. If there were a number of well-optimized mobile sites available for a particular mobile query, it’s unlikely that any desktop results would appear, and the question of whether or not brands need a mobile site might look very different.

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