owl

Reading into the area of semantic web applications, rdf, owl, etc. let me wonder about the lack of information you can get of the current state of development in this area. There doesn't seem to be a wide range of applications using OWL or even RDF. Therefore I'd like to know, what range you use rdf, owl & co for? Especially, how do you/ can imagine to, use Drupal for fürther applications?

My current project