CMS - Content management system. A self manageable web site. The site owner manages the content on their own.

SEO - Search engine optimization. The process of improving the quality of traffic to a web site.

SEO friendly CMS - A SEO friendly content management system combines self management features with automatic search engine friendly features.

Cms Buffet - We developed a SEO friendly content management system which helps web site owners manage their site easily and brings in quality traffic!

CMS Buffet can handle any project size and supports any web design.

Multiple domain names - Matt Cutts

Matt Cutts is currently the head of Google's Webspam team.

If the content is truly the same, I would pick one domain and make the other domains do a redirect to the domain you prefer. For example, Google.com could do a permanent (301) redirect to www.Google.com, and then we would see that and generally choose the destination of the redirect. Having content from two different domains isn't risky if they are in different languages (for example, Chinese and English), but if you have the exact same content on two different domains, it's better to use a permanent redirect from the duplicate domains to a single preferred domain.

If you have mirror pages without a redirect, that can cause issues. It's better to use 301/permanent redirects, because Google might choose to remove or not to show the copy that you liked the best.