You might not think it is necessary to have your website load fast. You might think that as long as you have pertinent content available to your targeted user and it’s SEO optimized, your site will pop up on the first few ranking pages of search engines.
This is not true anymore. Google has enhanced its web crawling spiders to not only harvest information about a particular website’s content, but also about loading speed of the pages on that site. This means that even if you have the most relevant product or information matching a user’s query, if your site doesn’t load fast enough, it might not be ranked highly on the search results pages (SERPs) by Google. Site speed might stop you from getting the visibility you deserve or need to grow your business and remain profitable.
HTML5 development is an ongoing effort of a consortium of many software developers and other interested industry groups to update and revise Hypertext Markup Language (HTML), which is the core language at the heart of the World Wide Web. The Web Hypertext Application Technology Working Group (WHATWG) started work on HTML5 in 2004 which is being edited by Ian Hickson of Google, Inc and David Hyatt of Apple. The HTML5 specification standard is in various draft states at at W3C (World Wide Web Consortium) which began working with the WHATWG draft of HTML5 in 2007.
Interactive 
You may not realize it, but some of the advanced design techniques that you use for your website, such as Flash, or heavy use of frames may actually be hurting your SEO rankings. When designing a website, it is important to make informed decisions about each design element in order to optimize the site for search engine rankings. By learning which tools can negatively impact your rankings, as well as which are designed to improve them, your website will have a better chance at ranking high with the major search engines.