I used to work on a CMS in the telecoms sector. We found the authors absolutely hated using online editors and much prefered word. We decided to use WebDAV to let them directly edit articles in word. They were able to hit save in word, refresh the browser and see their changes instantly. Because we were parsing the word docs ourselves we were able to choose which formatting to support. This meant we could allow different size headers for example but not different fonts.
Perhaps CMSes would serve writers better if there was a focus on providing amazing import tools that work with existing file formats, like .doc, that writers prefer and have used their whole careers. Maybe there is too much effort expended on reinventing the word processor in a CMS.
