You'd be surprised how much ontologies are catching on these days. Have a look at http://linkeddata.org/ http://linkeddata.org/ Ontologies and linking differen

You'd be surprised how much ontologies are catching on these days. Have a look at http://linkeddata.org/ http://linkeddata.org/ Ontologies and linking different ontologies have become a key part in unlocking large data sets such as Wikipedia, from governments, et cetera.