This tag gathers our technical coverage of RSS GUIDs — the unique identifiers that determine whether auto-posting tools treat a feed item as new or already-seen. You'll find troubleshooting guides for duplicate posting issues, explanations of how GUIDs are generated, and practical fixes for common misconfigurations. It's aimed at site owners and developers who want to understand what's happening under the hood of their RSS feed. Expect concrete, technical explanations rather than surface-level overviews. This is a good starting point if you've noticed strange or repeated auto-posting behavior.
