If you say you've written some very RESTful APIs internally, perhaps writing an article about the things you've specifically done from most APIs that makes yours RESTful and advantageous vs. a less RESTful API.
Be sure to read the first comment. I've sorta given up blogging about it, because I'm tired of fighting it. I am working on a side project, though, which exposes an actual Restful API, so maybe once I can use it as an example, I'll be able to blog more.
