Fiction, poetry & art

The POSSE principle, standing for "Publish (on your) Own Site, Syndicate Elsewhere," is a foundational best practice and architectural pattern within the IndieWeb movement. It addresses the challenge of maintaining individual control and ownership over digital content while still leveraging the massive distribution and audience reach offered by centralized social media platforms, frequently termed "silos."

The methodology dictates a strict two-step process to ensure data sovereignty. First, the creator must publish the original, canonical version of any content—whether it is a short note, a photo, a detailed article, or a video—exclusively on their personal website or domain. This step is crucial because it establishes the personal site as the definitive source, granting the content a permanent, stable URL (permalink) that the author fully controls. By establishing the original source on their own server, the author retains complete authority over the data structure, metadata, archival, and presentation, insulating their content from the transient policies and potential failures of corporate services.

Second, following the initial publication, a derivative copy of the content is then automatically or manually "syndicated" out to one or more third-party silo services, such as Twitter, Facebook, Instagram, or Mastodon. This syndication acts purely as a distribution mechanism, ensuring the content reaches the audience segments predominantly residing on those centralized networks. It allows IndieWeb participants to combine the benefits of robust ownership with necessary visibility and network effects.

Technical implementation is key to making POSSE effective and distinct from simple cross-posting. To clearly define the relationship between the original post and the syndicated copies, two canonical links are established. The copy syndicated to the silo must include a direct backlink to the original post on the author's domain. Conversely, the original post must link to the copies on the silos, typically using the rel="syndication" microformat property. This reciprocal linking is essential for tools and search engines to recognize the author's site as the canonical source, thereby preventing content lock-in and mitigating the risk of link rot if a silo service disappears.

POSSE stands in deliberate contrast to its anti-pattern, PESOS ("Publish Elsewhere, Syndicate on Own Site"). In the PESOS model, content is created and posted first on a silo, and then a copy is imported to the personal site. While this approach is easier and sometimes necessary due to restrictive silo APIs, it fails the ownership test: the original canonical URL and the primary conversation thread remain under the control of the centralized corporation. If the silo deletes the content, the original source is lost. Therefore, POSSE is the strongly preferred standard, ensuring the author maintains the ultimate authority over their digital identity.

Furthermore, POSSE is designed to unify disparate online conversations. Using IndieWeb infrastructure like Bridgy, interactions (such as likes, replies, and shares) that occur on the syndicated copies in silos can be detected and pulled back to the original post via protocols like Webmentions. This allows the author's site to become the central hub where all distributed engagement is aggregated and displayed, reinforcing the site's status as the definitive, canonical origin point of the content and its resulting conversation.

33 writers. 5 designers. 6-word science fiction.