"In the MusicBrainz/Wikipedia case, there is a deeper semantic option. DBTune.org provide awesome music datasets, among which is a MusicBrainz SPARQL service that contains relations identifying DBpedia entities, and consequently Wikipedia data, with MusicBrainz entities. A little bit of painful SPARQL, and your application is suitably enriched. And you are a happy developer because you have confidence in the join." Hawt. Hard.