How to add Meta Keyword in a blogger

How to add  Meta Keyword in a blogger :- Meta Keyword is the most Important part of SEO (Search Engine optimization), First of all you put the meta keyword in header part of Site. 

just like:-

<!-- Customize meta tags here -->

<meta content='YOUR-KEYWORD-HERE' name='keywords'/>

<meta content='AUTHOR-NAME-HERE' name='Author'/>

And Meta Description also is very most important and you put the meta keyword should be minimum 500  keyword in the blogger site.

<title>Rock Programmer - <data:blog.title/></title>

<meta content='3;/' http-equiv='refresh'/>

</b:if>

<!-- Customize meta tags here -->

<meta content='YOUR-KEYWORD-HERE' name='keywords'/>

<meta content='AUTHOR-NAME-HERE' name='Author'/>

<meta content='#' name='p:domain_verify'/>

<link href='AUTHOR-URL-HERE' rel='author'/>

</b:if>

<meta content='GOOGLE-META-TAG' name='google-site-verification= #'/>

<meta content='BING-META-TAG' name='msvalidate.01'/>

<meta content='ALEXA-META-TAG' name='alexaVerifyID'/>