How to Change Your Avatar When Posting Comments to the Blog?

We use Gravatar for avatars shown in the comment section of the blog. All you need to do is to register your email with this service and set your avatar image. You can then use this avatar anywhere on the net that supports Gravatars. Your avatar is unique based on your email address. This also helps you to maintain your identity when you post to blogs and prevents anyone from posting something else with your name.  If you are still not sure how this works, please contact support.