‘Index’ Meta robots tags: Again many think that using these Meta robots tags helps the search engine crawlers in indicating to index your page. But in reality, this is completely unnecessary. The search crawlers will index your website anyway; they are programmed to do so by default and would do it without any specific indications.
Website design does not affect SEO: On the contrary it does. While designing your website make sure it has search engine friendly attributes as this is very important for better search page ranking. Such site will make your optimization easier and you will gradually achieve better ranking with proper SEO.
Ending links with .HTML: A complete nonsense that belonged to the early ages of Internet. There is absolutely no need to end the URLs with .html to achieve better ranking in the search engine result pages.
Regular home page updating: You can do this if you have the time and resource, but it is unnecessary for website ranking. However, it is a good idea to put up fresh and valuable content to your website now and then and Google do value unique and fresh content when it comes to ranking. And a blog is probably the best way to do it, without going through the pain of updating your home page on a regular basis.
Link exchanges: They are old and almost obsolete. Trading links were old-age practices that SEO experts claimed would increase the Page Rank of your website. But Google has some additional pre-requisites for this apart from the number of back links. Relevancy and the quality of the sites you are exchanging links with are important as well. And exchanging links with large number of sites will only transform your site into a link-directory and no way help in better ranking.
So now that you are aware of the myths that are associated with search engine optimization, it is time to focus on the realities. What is it that helps to rank better on Google? The answer is content, rather quality content. Do not fall into the trap of keyword stuffed content; gone are the days when SEO practitioners focused mainly on the quantity of keywords rather than the quality of the content. Google has outsmarted those black-hat SEO tricks with its Panda and Penguin updates.