Words in your meta keyword tag have to be used on the page. The truth is that the Meta keyword tag was actually designed to be used for keywords that were NOT already on the page, not the opposite! Since this tag is ignored by Google and used only for uncommon words in Yahoo, it makes little difference at this point anyway.
You need a Google Sitemap. If your site was built correctly, i.e., it’s crawler-friendly, you certainly don’t need a Google Sitemap. It won’t hurt you to have one, and you may be interested in Google’s other Webmaster Central Tools, but having a Google Sitemap isn’t going to get you ranked better. Link. [tags]seo[/tags]