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"A HighRankings Forum thread has a very interesting topic just getting started.  The thread creator asks, \"What Has Changed In Seo In Last 2 Years?\"This is a great question.  People think that SEO tactics are always changing.  You need to constantly tweak your site to get the most out of your SEO success.  While others believe the same SEO principles have remained the same for the past five years.Yes, you always need quality content with solid internal site navigation, with title tags, clean HTML, good external links and so on.  But in the past two years, what has changed the most?Off the top of my head, I would say the following aspects of SEO changed the most in the past two years.  I am sure I am forgetting some aspects, but I'll do my best:What makes for a quality linkDuplicate content detection and filtersGoogle understanding dynamic contentTrusting a site and the content on that sitePageRank's importance in the algorithmSocial media's role in trust building and link acquisitionGoogle's transparencyBlack hat tactics constantly changeThose are just some of the ideas that came to mind when writing this post.  I am sure I can think up more ideas and flesh out the ideas I listed above, but that is not for this site.  Please feel free to add your two cents in the comments below or in the forum thread.  Maybe, I'll circle back on this topic and run a poll when I get a solid list of attributes and tactics. Forum discussion at HighRankings Forum."^^<http://www.w3.org/2001/XMLSchema#string>
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