"#FOAF allows a group of friends to represent their real-life social graph digitally by hosting FOAF documents on their own homepages. It allows them to do this without surrendering control of their data to a centralized database in the sky run by a billionaire android-man who spends much of his time apologizing before congressional committees."
- #SinclairTarget, 'Friend of a Friend: The #Facebook That Could Have Been '
@wyatwerp like the author said, FOAF was a product of a time when it was normal for most web users to have personal and professional homepages. I can't see how it would be helpful for chat, maybe for finding the chat address of a user by entering their email address or homepage? But you'd still need a chat app using a realtime protocol like #IRC, #XMPP, #Wave, #Matrix, or #WebRTC.
@wyatwerp Photo albums only need HTML/CSS, unless you want them to be private and shared only with certain people. In which case FOAF doesn't really help you with that as far as I understand it (although maybe combined with Oauth?). Public comments on public blogs/ videos/ podcasts etc, maybe, but there are other protocols like #WebSub that can also be used for that.
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