I don't know how keywords affect ranking. I just know that to rank high, the content has to interest webcrawlers, and the SEO must be right.  I simply write what can a visitor can find info about in the keywords.
I recently worked on a scene archive site, doing php and seo. I got the site to rank 7th in google just searching for the platform, and #1 by googling for platform+demoname.
</brag> :P
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~ Webdesign, programming ~
Decided to start rockin' - modxcms.com
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