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I would agree with Pixel by Pixel, DA is all about links, but its not the quantity you need to worry about, its the relevancy of the links. Also you don't want to get links, you need to earn links - then you don't need to worry about penalties from Google and other search engines. To earn links there is plenty of great articles on Moz about improving your DA but I would start from this one http://moz.com/learn/seo/page-authority Thanks Andy