SEO, when done well—with quality in mind—doesn't just help increase your search rankings; it also improves your entire website from the viewpoint of search engines as well as your visitors. And that, rather than a cheap shot at fooling search engine algorithms, should be the ultimate aim of your SEO campaign.
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http://www.marketingprofs.com/articles/2012/9647/10-seo-tips-to-improve-your-search-rankings-and-your-website?adref=nl120512