I've never been a RSS user...but having played around with it on the 9800 I can see myself using this for sure...
I'm just concerned that it's storing way too much data.
I have about 5 feeds which is about 100 stories a day...and it seems to be saving every single one of them since I first turned it on 2 days ago.
I see no options to limit the number of stories it stores or the amount of time it stores them so I'm guessing it will store them for as long as I have messages set to be stored (30 days).