javac JavaSha1.java
java JavaSha1 "mailto:libby.miller@bristol.ac.uk"
289d4d44325d0b0218edc856c8c3904fa3fd2875

./PerlSha1.pl "mailto:libby.miller@bristol.ac.uk"
289d4d44325d0b0218edc856c8c3904fa3fd2875

DAML/RDF aiport codes: 
http://www.daml.org/2001/10/html/

more info:
http://esw.w3.org/topic/EswWp3

DAML GIS info
http://www.daml.org/2002/04/geonames/

lat/long lookup? - UK
http://www.streetmap.co.uk/

Jim Ley's SVG code
http://jibbering.com/foaf/foaf-people-map.svg