I think he meant that in ..dot..'s idea, you cant re-use one class in different sections.
You must define it twice - thats the duplication thing he meant.
but theres no doubt that the idea is worth thinking. With some standardization added to "skins" we'll be able to build tools for skinners like this: http://ui.jquery.com/themeroller
Perl - the only language that looks the same before and after RSA encryption.