urlBorg shortener (runs on Google App Engine)

congrats for twitterfeed, it's awesome. i was thinking if you can add one more shortener, urlBorg [http://urlborg.com]. It does click monitoring [clicks on short URLs user creates, clicks on the short URLs user clicks] and it scales very well as it's built on Google App Engine. It also offers some other nifty tools. Btw i'm not affiliated by any means with the service. I'm just a user