There's a newly minted RFC 5023 out this week covering the Atom Publishing Protocol. AtomPub is an application protocol for drafting and publishing a collection of documents over HTTP. It comes almost two years after the related Atom XML syndication format was published as RFC 4287. AtomPub uses the standard GET, POST, PUT, and DELETE verbs to interact with documents and document collections on a server. Each document is essentially just an XML metadata blob that contains a content block and can be extended to create microformats for specific document types.