This is a feature request to allow for RSS feeds by category instead of just one feed. This would work similarly to the way that wordpress operates. I use RSS feeds for our weekly newsletter and want to be able to break them out by category. I would also like the ability, like with wordpress, to be able to include multiple categories in one feed. I use that for our app.
Thanks for the post.
There's a feature request for this and I'll add your support to this.
For now there are third party tools that you can use to filter the RSS feeds for you.
Hope this helps,