http://reavsl05.bravesites.com/entries/general/why-ignoring-%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%97%E0%B8%B3-seo-will-cost-you-gross-sales <a href="http://marcood61.blog.com/2014/10/28/strategies-your-parents-never-ever-explained-to-you-about-%e0%b8%a3%e0%b8%b1%e0%b8%9a%e0%b8%97%e0%b8%b3-search-engine-optimisation/">the original source</a>