Joe Gregorio has a RESTy comment API based on RSS 2.0. His article compares it with the soup of other protocols available: TrackBack, PingBack, and Post-It. One problem: it links to the author’s home page rather than a specific post, so it’s not good as a link-notification mechanism, as TrackBack is. And John Gruber points out that TrackBack isn’t really that good for comments in practice, because the dominant implementation just resends the article summary.

His Referrers list, however, continues to show a lot of junk along with the real links, including one user’s local Radio Userland aggregator on port 5335.