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One other thing... I'm assuming (hoping) that the content you will be providing the news site will be original and not reprinted on your site.  If you do reprint on your site, you should use a canonical tag to establish the originator of the content, which the news site will probably want to be them. Also, if you have setup a Google+ authorship account, you can claim authorship of the articles that are being published on the news site as well as content on your own site.  That can help with your search rankings as well.  Right now, Google says authorship doesn't affect rankings (which i think is debatable), but I know for a fact that it does affect personalized results.

Hi Chris With over 4000 pages on your site I'm assuming you are using some kind of CMS? Either way I would recommend the use of the rel=canonical tag to counter this potential duplicate content issue. It helps by a. proving to the search engine's you are already aware of this issue and b. clarify which of the duplicate pages they should prioritise and pass DA to. SEOmoz have published a great post on the various options on how to implement the code which can be found here: http://www.seomoz.org/learn-seo/duplicate-content. The other option would be to use 301's. In my experience implementing 301's on a window's server (assuming this is the case as your url extension is .asp?) can be tricky. The management of hundred's of 301's can also become very cumbersome and complicated often resulting in infinite loop errors. Hope that helps. All the best Alex

Hi Alsvik, Thank you for your answer. I have read that article before (and did read it again..:) ). However, that solution will help a lot, but I am not sure that it will solve all the problems that I expect will come.. What I am more concerned about is the Magento platform itself - it has bad reputation when it comes to creating DC - so will the above mentioned article do the trick, or is it simply impossible to avoid DC on Magento Platforms? Christian