One of my most respected sources, ResearchBuzz, has reviewed FeedDigest. You can trust Tara to tell it like it is, and she holds no punches. Her points are valid, although most have valid background reasons I had to rationalize during the development. Still, I'll be taking it on board and making the user experience even better. Thanks, Tara.
In other news, I found a nice German review. Babelfish did a reasonable job on it, and they raise an important issue.. make sure you're allowed to syndicate the feeds in your digests! I will be stressing this a lot more in future iterations of the system, as well as integrating the rights management in Atom a bit more.