As you know in blogs, meta of particular posting is followed by the metas of Home page which is not good for Search Engine Ranking. So you need to implement different meta tags for each posting. To get identical meta tag for each posting, you can implement below code in <head> tag.
<b:if cond='data:blog.pageType == "index"'>
<title><data:blog.title/></title>
<meta content=''Keyword1, Keyword2" name='Keywords'/>
<b:else/>
<b:if cond='data:blog.pageType == "archive"'>
<title><data:blog.title/></title>
<meta content='Blog description the same as above' name='Description'/>
<meta content='keywords, the, same, as, above ' name='Keywords'/>
<b:else/>
<b:if cond='data:blog.pageType == "item"'><title><data:blog.pageName/> ~ <data:blog.title/></title>
<!-- /seo title Distrubuted-->
<meta expr:content='data:blog.pageName' name='Description'/>
<meta expr:content='data:blog.pageName + data:blog.title' name='Keywords'/>
<b:else/><title><data:blog.pageName/></title>
<meta expr:content='data:blog.pageName' name='Description'/>
<meta expr:content='data:blog.pageName + data:blog.title' name='Keywords'/>
</b:if>
</b:if>
</b:if>
Know More Steps to Optimize Your Blog Post: http://googleseostrategy.blogspot.com/2011/05/if-youre-writing-and-publishing-blog.html
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<b:if cond='data:blog.pageType == "index"'>
<title><data:blog.title/></title>
<meta content=''Keyword1, Keyword2" name='Keywords'/>
<b:else/>
<b:if cond='data:blog.pageType == "archive"'>
<title><data:blog.title/></title>
<meta content='Blog description the same as above' name='Description'/>
<meta content='keywords, the, same, as, above ' name='Keywords'/>
<b:else/>
<b:if cond='data:blog.pageType == "item"'><title><data:blog.pageName/> ~ <data:blog.title/></title>
<!-- /seo title Distrubuted-->
<meta expr:content='data:blog.pageName' name='Description'/>
<meta expr:content='data:blog.pageName + data:blog.title' name='Keywords'/>
<b:else/><title><data:blog.pageName/></title>
<meta expr:content='data:blog.pageName' name='Description'/>
<meta expr:content='data:blog.pageName + data:blog.title' name='Keywords'/>
</b:if>
</b:if>
</b:if>
Know More Steps to Optimize Your Blog Post: http://googleseostrategy.blogspot.com/2011/05/if-youre-writing-and-publishing-blog.html
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