u-syndication

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u-syndication is a way to discoverably link from your original posts to syndicated copies on other sites like social media silos.

Contents

Why

Why should an original post visibly hyperlink to syndicated copies?

POSSE threading

It enables those that that reply to your posts and POSSE similarly, to thread their POSSE replies to your POSSE copies.

If an Indieweb site supports POSSEing to one or more silo destinations, it should:

  • do u-syndication discovery on the original in-reply-to URL
  • for each such POSSE destination:
    • choose the first u-syndication link that goes to that destination and save it
  • when POSSEing the reply post to each POSSE destination:
    • if a u-syndication link was found for it
      • be sure to thread the POSSE copy of the reply as a reply to the respective u-syndication link

More use cases

For more use-cases see: syndication-link-use-cases

How to

How to publish

An original post should add a hyperlink to syndicated copies (e.g. per POSSE) with a class name of u-syndication inside their h-entry markup.

See the rel-syndication specification for more details.

How to link to Twitter

When linking to POSSEd copies of posts on twitter.com, make sure the link scheme is https:// for original-post-discovery as Twitter.com redirects to https.

How to link from WordPress

The best option is David Shanske's Syndication Links plugin. He took the functionality of the "WordPress Syndication" plugin below and merged it into this one so two things don't need to be maintained.

The following alternate plugins are unmaintained[1] and causes unknown error[2]:

How to use

An Indie Web site that supports the ability to reply to posts should allow you to reply to any URL. As part of that reply UI, it should do u-syndication discovery for the POSSE threading use case described above by following this algorithm:

u-syndication discovery algorithm:

  1. load the in-reply-to URL as a document
    1. parse the document for microformats2
    2. if there's a top level h-entry
    3. then collect all of its syndication property values
  2. end if
  3. return whatever was collected

IndieWeb Examples

IndieWeb sites that implement rel-syndication links on their post permalinks, in rough order of implementation:

See more thorough exploration of the UI / text of u-syndication links here:

History

Previously, this page recommended using the rel="syndication" attribute on the syndication URLs. However, since rel attributes are page-scoped, this limits the usage to only on page permalinks. Using u-syndication allows syndication URLs to be included on h-entry posts within an h-feed.

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