"One of the things people like best about Google Buzz is the ability to have conversations in the comments. But until now, if you were reading a post in an email client (like the native mail app on your phone or Outlook), you couldn't easily join in on the conversation -- you could only email the original poster. Today, we rolled out a new Google Buzz feature for you to try out: comment via email. Now, you can comment on the post simply by replying to the email message.
Plus, last week we made it possible to view entire photo albums in Buzz (rather than the handful of photos from a given Flickr or Picasa album you could see before). So if you share an album with tons of photos, people can now click through all of the photos in the Buzz photo viewer."