Buzz's privacy settings are based on your Gmail contacts list, so if you haven't already set that up you'll want to go through it before getting too busy with Buzz. You can do so via the Contacts menu on the left side of the Gmail window (just click the New Groups button to the left of the Search Contacts field), or through the Buzz input box's privacy settings (click the Public button and pick Private to get the option to publish to existing Contacts groups or create a new group).

You'll probably want to create a few commonly used groups before diving into Buzz--having to spend a few minutes dealing with the privacy settings each time you want to post a new buzz to a new group kind of kills the spontaneity of it all. (Also, the Buzz Web app doesn't let you specify new groups--you have to do it from the normal Gmail page.)

Now that you have your Buzz feed under control, it's time to start tying in your various social networks. When Buzz first surfaced in your Gmail account, you created a Google Profile (if you didn't have one already). At that time, you should have had the option to link other networks to your Buzz account--Flickr and Picasa accounts for sharing pictures, for example, or your Blogger feed. As of this writing, you can officially link only Blogger, Flickr, Picasa, your Google Reader Shared Items, GChat status, and Twitter accounts to your Buzz feed, though with a little more work.

To add these sites, just click over to the Buzz tab in your Gmail and click the X Connected Sites link to bring up a window that lets you pick which ones to add. If you have an account or a page you want to link that isn't showing up, go over to your , click Edit Profile (in the upper-right corner) and add it to your Links list there.