As if I have a shortage of things to read. My RSS feeds are neglected, and all are worthy of reading. Get me an app that buys me the time to catch up on my reading-- now that'd be a killer app.
I've also used an OS tool called Dictator in the past, until it stopped working on my computer. I read Brother's Karamozov at 2500 wpm! It was something about Russia...
I've found instapaper during my morning commute is an app that buys me time to catch up on reading. Works even better if you commute by tube and there is no phone signal to distract you (with email, twitter, etc).