foaf:loaf
property relates a foaf:Person
to a LOAF
foaf:Document
. The LOAF document format is designed to
encode a representation of an email addressbook without compromising
privacy. It can be used for mail filtering and prioritisation, and for
social network analysis. See the LOAF site for details and an example file. A
related approach is the FOAF
whitelists experiment, which also uses hashed mailbox identifiers
for spam-filtering.