Google Buzz has certainly been generating lots of buzz. Here are some privacy tips that you have been clamoring for.
Disabling Buzz - Go to the very bottom of the page. There is a link that says “turn off buzz.”
Removing a Follower - Right above your posting text box, there is a link that says “# followers”. You can then click the “Unfollow” link to remove the person.
Blocking a Follower - Going a step further you can click on any name in your buzz and they will show up at the top of your page with links to “Unfollow” and “Block [name].”
It has been noted that blocking a user may not work. If the person has a Google Profile, you can block them; however, if the person has not yet setup a Google Profile, they will remain unblocked no matter what you do. Google dropped the ball on this one.
Limiting who can see your Buzz - You can choose who can see your posts on a per post basis by setting up contact groups.