[Standards] Re: Proposed XMPP Extension: Link Metadata

Should we, perhaps, consider Metalink (RFC 5854) instead of OpenGraph, and any other similar solution which be specific to XMPP, for such task?

While I expect OpenGraph to be a popular vocabulary here because it is the biggest standard for link metadata, we are not restricted to that by the XEP. TIL metalink, it looks basically identical to the jingle file element (and the sfs file element). Sad that we now have three of these defined instead of collaborating. However it's not really related to the main link metadata use case.