What about an XML driven CMS / native database? Three obvious advantages:

1. SEO friendly if it is well (folder) structured. Content not hidden in a Database.
2. No need for a database platform. Sun Buys MySQL For $1 Billion
3. Fully compliant with the XML family of technologies.

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Kjell Gunnar Bleivik:: Financial information at your fingertips
Learn object oriented programming where it started