I am going to tell you how to change that so that you can have this instead.
I associate so many of you with your picture and now I feel like I don’t “know” you any more. So take a second and fix that.
You can have your own gravatar (globally recognized avatar) whether you have a blog or not. Just go to gravatar.com to get your free personalized picture. It will then show up on all gravatar enabled sites, WordPress included. So go upload your picture, come back here, and test it out in the comments. I want to see your face, and so many others do as well! This works for me.