As a way to demo some thoughts from one of my previous posts, I wrote a small python script that query my main FOAF URI to retrieve my other URIs (flickr, twitter ...) and related RDF files, then SPARQL each of them to retrieve relationships and creates an XML file according the needs of Graph Gear.
A few years ago, I created my FOAF profile with FOAF-O-Matic.
A nice feature of the foaf:openid property is that it helps to retrieve the unique foaf:Agent associated to an OpenID URI, since its an owl:InverseFunctionalProperty.
When I wrote PHOAF, I have to deal with the question of identifying who was the main subject of a FOAF profile (either a Person or a Group) in order to get links to their homepage, depiction...
In most of people's files, thanks to foaf-o-matic,
Following Dan Brickley's experiments, I've just setup an OpenID plug-in for this weblog, allowing anyone to register using OpenID, since users now need to register to comment.
Actually, one of the reason I installed it is that I thaught it would be an easy way to retrieve a FOAF profile for any registered user on this weblog.