Evan ProdromouIt's an extensible data format so you can literally add any data types and properties you want.
If you don't see the use case, don't use it.
I think the distributed, internet-wide pubsub structure is really interesting.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.