An “avatar” is an image that represents you online—a little picture that appears next to your name when you interact with websites eg comment:
“Your Gravatar is an image that follows you from site to site appearing beside your name when you do things like comment or post on a blog. Avatars help identify your posts on blogs and web forums, so why not on any site?”
You can easily do this by creating a free account on gravatar.com
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