diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md
index 27770e7..b4f85a5 100644
--- a/book/src/SUMMARY.md
+++ b/book/src/SUMMARY.md
@@ -8,3 +8,6 @@ Summary
   - [Alternatives & Prior Art](./bittorrent/prior-art.md)
   - [UDP Tracker Protocol](./bittorrent/udp-tracker-protocol.md)
   - [References](./bittorrent/references.md)
+
+- [Metadata](./metadata.md)
+  - [Prior Art](./metadata/prior-art.md)
diff --git a/book/src/metadata.md b/book/src/metadata.md
new file mode 100644
index 0000000..ba94e3d
--- /dev/null
+++ b/book/src/metadata.md
@@ -0,0 +1,4 @@
+Metadata
+==========
+
+This page intentionally left blank.
diff --git a/book/src/metadata/prior-art.md b/book/src/metadata/prior-art.md
new file mode 100644
index 0000000..c6d09fb
--- /dev/null
+++ b/book/src/metadata/prior-art.md
@@ -0,0 +1,4 @@
+Prior Art
+=========
+
+- [Media RSS Specification](http://www.rssboard.org/media-rss): _Media RSS is a new RSS module that supplements the <enclosure> capabilities of RSS 2.0. RSS enclosures are already being used to syndicate audio files and images. Media RSS extends enclosures to handle other media types, such as short films or TV, as well as provide additional metadata with the media. Media RSS enables content publishers and bloggers to syndicate multimedia content such as TV and video clips, movies, images and audio._