Application areas
- workflow management (eg. Adobe XMP, Dublin Core, ...)
 - SVG raster overlays (imagemaps!) for clipart-style re-use, EXIF device data
 - Image classification (Wordnet is cool)
 - Arbitrary data about depicted things, places, etc.
 - Integration with thesauri for search and browse (eg. SKOS/RDF)
 - Richer mapping apps (vegetarian restaurants? cinema listings? data binding...)
 - Symbol classification for accessibility
 - Who made this? When? where? with what?