1) Settings to control what gets sent to your inbox
From the Buzz tab of Gmail Settings, you'll be able to choose whether the following buzz items get sent to your inbox:
2) Explanations for why posts get sent to your inbox and an easy-to-find "Mute" link
You'll see a new message at the top of each post in your inbox that explains why it's there: someone commented on your post, you were @replied, etc. We've also added an easy-to-find "mute" link that will stop subsequent comments from bringing the conversation back to your inbox.