I've pretty much re-designed the website... Now with better comments, Gravatar support and more.
Gravatar (Globally Recognised Avatar) lets you set your avatar (user picture) on one website and use it everywhere else automatically. All you have to do is use the same email address when you post a comment and it'll use the Gravatar.
Simply go to www.gravatar.com and create an account and upload an avatar. It's that easy.
And if you don't have a Gravatar, the system will generate a unique image for you :)