In our never ending quest to bring awesome profile power to gravatar users, we’ve added support for three awesome services: Gowalla, GoodReads and Google Profiles. And yes, it is true, given we are called Gravatar, we do have a secret preference for G named services.
You can add these new services to your Gravatar Profile the same way you add any other service. Just click “Edit My Profile” under the “My Account” menu at the top of Gravatar.com and then go to the “Verified Services” section. Enjoy!