<< When you participate in a conversation in Google Buzz, we bring that post to your inbox so it's easy to keep up with the discussion. But we’ve heard loud and clear that buzz in your inbox can get noisy — we feel it too, so today we're launching two features to help with this:

1) Settings to control what gets sent to your inbox

2) Explanations for why posts get sent to your inbox and an easy-to-find “Mute” link >>

http://gmailblog.blogspot.com/2010/03/better-controls-for-buzz-in-your-inbox.html