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XFN is the origin of the rel=me attribute [1]. Rel-me adoption is growing in recent years, with Mastodon and others adopting it as a way to associate profile pages together [2].

Maybe two years ago, I added rel-me to a blogroll web crawler I'm building [3]. Unfortunately, theres a bunch of misuse, like people adding bidirectional rel-me to a company page which make it look like the whole company is one person.

I don't think we'll see other attributes, if only because people are more privacy aware. XFN is like using Facebook but letting every web crawler harvest your social graph, instead of just Facebook.

[1] https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...

[2] https://docs.joinmastodon.org/user/profile/#verification

[3] https://alexsci.com/rss-blogroll-network/discover/feed-de42f... (rel-me adds the checkmark here)

This brings to mind FOAF: https://en.wikipedia.org/wiki/FOAF

I remember this being somewhat talked about in 2005. It was like an alternative to Friendster. But no one ever made a feature from this. Is this still a thing?

Dang, I was expecting a 1-900 phone number that would allow me to get my horoscope, sort of like the Psychic Friends Network from the 1990s, but in XML format.