Feeder is much better than newsroom, in my opinion. The flashy interface is nice, until you subscribed to a lot of feeds with hundreds of articles in all of them, then the list interface of Feeder lets you get your feeding done quick.
It now runs full screen and has back buttons. I installed it via box.net and Preware. Works fine so far - only the share function (e.g. to twitter) would need updating as the clients are not up to date.