Anything potentially GRDDLable around YADIS, SAML etc?

Hey Henry,

I was just randomly following a thread through from OpenID, wondering
whether there may be anything (like foaf:openid) that might be
usefully RDFized for use in service description. But there seems a
Pandora's Box over there - Yadis, strange-seeming XDI stuff, SAML etc.

But most of these things seem to have an XML serialization, so a
mapping to RDF should be straightforward to implement, given a clue
about what they mean...

I see from [1] you've been in these parts already - any thoughts?
Anything stand out as low-hanging-fruit?

Cheers,
Danny.

[1] http://blogs.sun.com/bblfish/entry/openid_and_saml

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