Search engine optimization scripts for blogger or site

Search engine optimization or SEO is a technique or process to get high traffic from top ranked search engines such as Google , Bing , Yahoo .Every Blog or site must search engine optimized , if not , then your blog or site will not get fruit juice as others sites enjoying .I am a blogger since 3 years and learn one thing that if your blog is not optimized for SEO , then you are wasting your time