Wordpress is on 29% of the web, meaning that there are a lot of people over there looking for integration with their systems. I can think of use cases like users synchronization with other data sources, automatic post, migrations, reports creations and so on. Although where it could be really shine is on e-commerce web sites built on top of Wordpress. Camel could integrate the e-commerce platform with a CRM or an ERP, for example. Anyway, I think this component may see many uses.
I'm already on it and should send a PR in a couple hours.