[Jon]

Search engines don't penalize for duplicate content, if anything they just rank one page higher than the next. The page titles being changed and having unique urls, prevents duplicate content, though its still ideal to have unique meta keywords and meta descriptions. in the case of sub-pages of a category I don't believe it will have any adverse affect by just duplicating meta descriptions since the description is in fact accurate, but we are investigating possible solutions for this in future cdseo versions.