RDFMapper - geospacial blog annotation

Related link: http://www.mapbureau.com/rdfmapper/

RDFMapper is a web service that searches an RDF file for resources with geographic locations, and returns a map overlayed with dots representing located resources. Clicking on a dot displays a web page representing the clicked resource. Arbitrary images can be treated as maps, so the service can be used for any kind of image annotation.