How to Turn off Buzz
If you are worried about privacy and Google Buzz (you should be), here’s how you can turn it off.
1. Log into Gmail
2. Scroll down to bottom of the page
3. Click: “Turn off Buzz”
UPDATE: See here (Thanks Karl!): http://www.scotxblog.com/legal-tech/lawyer-privacy-on-google-buzz/
You can follow the Google Blog for more information.