Currently when browsing to an object, the metadata is generated using the site.ini settings -> MeataDataArray. since the Article(and other classes) have an atribute of type keywords, these can be used to generate object-specific matadata.

what is needed is to insert (in pagelayout.tpl or page_head.tpl) a <meta name=keywords" .... > line populated with the current node's keywords, if they exist. it would help much to SEO each page on the object level.