Factiva is now testing a new RSS service for subscribers. See the info sheet. Just in time for them to drop many of their legal customers. But I'm not bitter.
If you give it a whirl while you still have a subscription, I'd be interested in hearing how you like it. I haven't tried it out myself yet. Thus far they are "feeding" articles selected by the editors with the view to expand this service in the future.
By the way, according to the backgrounder up to 5% of U.S. internet users actual read RSS feeds daily. That would be quite a lot of people, with lots of room for increase.