Twitalyzer is one of the many services working off the back of Twitter. This one is particularly nice because it allows you to track down the Tweets about anything (let’s say, your brand), and builds a brand profile according to 5 categories: Strengh, Signal, Favor, Passion and Clout.
It also points out who are the top influencers discussing your brand (pretty useful for rewarding them, or slapping them), breaks down your results over time, and compares your brand to other Twitter users.
I played with it a bit, and Twytalized Jack in the Box:
And here is why I love Jack in the Box:
Final Burp: a picture is worth a thousand Tweets…