This could be a neat mobile app...
(If you don't see anything, click through. I threw the Grazr Javascript app into an image shell of a mobile phone). -Russ
Update: Actually, mFoundry has an app that is almost exactly like this. It's a demo Java app showing their platform you can download for free... I've seen that before last year but I just totally forgot about it until today! It needs to use screen real-estate a bit better, and import my OPML file, but it's pretty damn close if you ask me. :-)
-R