Google Does Not Consider Meta Keywords Tag
The meta keywords tag is the tag that looks like this in the head section of a webpage …
<meta name="keywords" content="tutorials, tutorial" >
where webmasters can insert keywords of their liking. However, since this tag has been over-used and abused by spammers — and anybody can put whatever they want in that tag — Google search engine rather rely on many other more reliable factor for SEO than looking at this meta keywords tag.
Matt Cutts who works at Google on SEO says that the Google does not even look at the meta keywords tag in this video …
which was posted on mattcutts.com blog.