1. Jason Shellen: Putting an exclusive, first 100 people only invite code into a tweet is awesome marketing.
2. Uses OAuth to access my Blogger data; yes!. I probably would have trusted Jason with my password anyhow, but it's really good not to have to.
3. Thirty second impression: Looks like a way to generate and disseminate conversations. I think it needs a social network component for exploration (yes, everyone is twittering about NCAA -- I just don't care).