Plugin by Godlessons allows you to add full or partial posts to Google Buzz automatically. Allows one profile for the main feed and each author can add their own profile to their profile page.
WP AutoBuzz adds a hidden rel=”me” link pointing to your Google account to the header of your website. When Google sees this link, it knows that you are the owner of the page, and allows you to add it to your Buzz.
Select WP Autobuzz in the settings menu, and enter the Google user name for the main feed. If you want to allow authors to connect their feed to their own Google profile, check the “Allow per author profile” box.
Plugin homepage and info: http://godlessons.com/plugins/