The Podcast Namespace, as discussed in the Podcasting 2.0 podcast episodes, refers to the evolving set of standards and features that are being developed to enhance the podcast ecosystem.

In Episode 167: Deck Darlings, the potential inclusion of blogs and newsletters in the podcast namespace is discussed, sparking debates around the definition and scope of podcasting.

In Episode 164: Let's Get Local, Phase 7 of the podcast namespace, including features like publisher feeds, podcast verification ownership, and chat integration, is a key topic covered in the episode.