Some free advice for Twitter re news..
I would pick up news by a different thread. You have an advantage that almost every newsmaker makes news via Twitter. So when a story is happening, the principals of the story are probably speaking on Twitter.
So I'd look for what they're saying and present it in an easy way to skim. The people are what's key to Twitter, stories, then people.
Also we saw our first Twitter TV ad last night. It's good to see Twitter doing that, but the ads are more confusing than the product. Not good for a product that normal people have trouble figuring out.
Better approach: It could be like the famous Apple commercial about the Crazy Ones, except you don't have to guess about who they are (Jim Henson probably didn't use a Mac, nor did Einstein or Picasso). Your icons are real people alive now, making news, if not history.