Very interesting project and I had fun listening through the recent tweets from HackerNews and ShitMyDadSays. A minor annoyance is the robot voice, but I realize you may be at the mercy of the text to speech engine on that one. My only criticism would be when reading @replies. It says the name of the person you're replying to twice in quick succession and it's hard to understand. I'd either say it once or just put a pause in there. ;)
