Is there a Restful Blog API

I can't seem to find a true restful Blog API - are there any? I'm writing some blog software and wondered if there was a standard restful API, if not I'll go buy the RESTful Web Services book and design my own.

How about AtomPub?

Atom is the name of an XML-based Web content and metadata syndication format, and an application-level protocol for publishing and editing Web resources.

It isn't limited to blogs, but blogs certainly fall under the realm of applications are used for "publishing and editing Web resources".