Reeder , the new best RSS reader for Mac, is finally out of beta! It's only $9.99, on the Mac App Store .
Reeder is great, because all I ever do is arrow-down through news stories, glance over ones I might be interested, press 'B' to open the really interesting articles in my browser, and then press 'A' then 'return' to mark all stories as read.
It's fast, simple, elegant, and hides a ton of extra complexity (in case you want to do more with it than I do). I love it even more on the iPad... it's simply the best solution for iPad or Mac. I don't bother reading news feeds on the iPhone much, though (I use both NetNewsWire and Reeder on that platform).