http://dbtune.org/last-fm/<username>
Short video demonstrating how to use RDF data-sources to create mashups in Drupal
The Expert FOAF Profile Generator enables users create "Friend Of A Friend" (FOAF) profiles .
Fuzzbot is a native Firefox plug-in that uses librdfa for it's processing back-end. It is most useful for detecting embedded semantic information in web pages and performing actions on that semantic data.