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Now about the description meta tag, taking page copy verbatim is often not the best (although it doesn't really hurt) because page copy often has extra "fluff" in the language -- and you want a description to be concentrated information about the page, expecially the first 100 characters or so.
If you're autogenerating the page, then grabbing content may be easier, but tailoring the meta tag a bit can give better results. After all, when it is used, it stands as an invitation to click on your site - that's a bit different than page copy.