If "there's also a feed of everyone's posts together," I see that a small group of writers could collaborate on a topic of concern in a single instance of rss.chat, creating something they think of as a single-topic publication.
This could be a topic of pressing short-term interest, and that response would be nimble, wouldn't it? When a weather disaster threatens a region of the country, for example, the tools are already in place here and there's a low barrier to entry for new writers to contribute. The feed would send the posts to a WordPress blog built in minutes for the occasion, yes?