I was going to add belated to the post title. I kept on checking my Gmail, since I knew that to be the notification mechanism. But there was no email about it, so when I checked Gmail via my iGoogle home page, I seemed Buzzless. Then I went to Gmail itself, and saw the invite there, albeit not in a mail.
In my crusty mood, I thought I saw a grumpy face on one of the baguettes I made. It is my new Google profile image, and hence my Buzz icon.