How to add the service to my Twitter?
If you are having a blog and you are using Feedburner, then connect your Twitter account to it for auto-update of your Tweets with the Unique short URL of the Google "Goo.gl".
The Following are the Instructions to set up the Feedburner with the Twitter:
Log in to your Feedburner account.
Go to your feed and then to the "Publicize" option from the Top.
You will find a link "Socialize" over the left sidebar. Enter into it..
There you will find an option called "Add your Twitter account".
First check your needed option and see the Preview of the Tweets and then connect your Twitter account with Google.
After connection, just active it... Its now activate, all you need to do...
Start Using the new URL service of Google "goo.gl".
You can even add your tag over the Hash text box. It will automatocally create a Tag like #yourtag on your tweets...