Case Study: LiveJournal • Data
about a person (FOAF) - ✓ • Social network (FOAF) - ✓ • Identifying information ... Difﬁculty: this data (foaf:mbox_sha1sum) is spread across friends’ proﬁles. Must be collected together before use.
Distributed Social Information • What
about using Flickr, Twitter, ... account URLs as identifyers? - Identifying properties are only useful if other sites also knows this data - Entering all the URLs again and again?! • Describe these accounts once - Applications can get this info from your homepage (e.g., described in FOAF)