Anyone considering RDF's potential benefits and starting to play with RDF, OWL, and SPARQL for use in vbulletin?
Interesting framework
ARC - RDF and SPARQL for PHP developers
ARC is a lightweight, SPARQL-enabled RDF system for mainstream Web projects. It is written in PHP and has been optimized for shared (or otherwise performance- or privilege-limited) Web environments.
http://arc.web-semantics.org/