http://judedd19.bravesites.com/entries/general/learn-how-to-%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%97%E0%B8%B3-web-optimization-from-the-movies <a href="http://blogs.rediff.com/daletn/2014/10/28/aaasaa-search-engine-optimization-may-well-not-exist/">you can check here</a>