Google Buzz initially added the ability to stream your Twitter'a into a Buzz feed. Most of those who appreciated this feature, probably wondered "is it possible to act in the opposite direction?". Louis Gray blogger tells us how to proceed:
Connect to your Twitter using OAuth * (You will need to return to the reader2twitter.appspot.com/buzz page after this, because OAuth will return you to the root URL without the prefix / buzz)
Add your Google Profile Number ID
Make sure that “Sync” is in the “On” position, and click Submit