First useful info from Twitter for me :)
After sending an email to Terroir Coffee asking them to explain the roastiness terminology that they use for all their coffee. It's obscure and not mentioned on the web site. No response.
I happened to note that George Howell, who is their CEO and visionary was tweeting. So I posted the question to him on twitter for all the world to see, and lo- and-behold, I got an answer.
Maybe I should try the same technique for the Mint.com question I don't seem to be getting a decent answer to.
Prediction: this model of customer service doesn't scale. As soon as the novelty wears off, Twitter as a way for the CEO to 'stay in touch with the little people' will fall by the wayside. I mean where's Jeff Bezos on Twitter?