Clarity regarding controlled vocabularies, taxonomies, thesauri, ontologies, and metamodels. With all the scuttlebut going around about folksonomies and tagging, these are important terms to understand. In the process of tagging, it's pretty noticeable
wOW! Search on 'metabolic AND syndrome' came up at zero, but shifting to 'metabolic,' I got SKILLIONS of articles related to "metabolic syndrome." GOOD ones!