Probably I missed or didn’t understand the announcement.
For the past month or so, I’ve noticed all these comments with the poster’s picture next to it on various blogs. I knew them to be WordPress blogs. I noticed my own WP had some default icon in the admin user interface. Today I finally put it all together.
A recent WordPress version incorporated Globally Recognized Avatars into the main code. (They are also known as GRAvatars) Using a hash on the email address, it locates a WordPress commenter’s 96×96 picture for including in the comment. Naturally, you need to register your email account with the gravatar service.
So, now many of you get to see my ugly mug!