Ben Hammersley writes about anonymously publishing an address book in FOAF, that is publishing the relationship but omitting all other details (even the person's name) and leaving it up to the contact to add the information. This is similar to the problem of publishing anonymous communities in FOAF. A crucial difference however is, that I wouldn't be able to hide my relation to Ben (if I had any) because I already have a FOAF file, whereas I could still hide my membership in that anonymous community. But then, this was exactly Ben's goal: To publish the relationship and only the relationship.
Posted by seefeld at July 25, 2003 16:22Am about to post this to Ben's weblog too... you just reminded me that http://rdfweb.org/mt/foaflog/archives/000029.html uses a pretty similar technique to use mbox_sha1sum hashes to indicate just a relationship.
Posted by: Dan Brickley at July 26, 2003 12:17 AM