Can I see a picture of my face instead of some initials?
We like seeing smiling faces and selfies. By default user icons in the system are in the format of first initial, last initial.
Gravatars can be displayed instead whenever a user has one uploaded.
Gravatar stands for Globally Recognized Avatar with many popular applications like WordPress having built-in support for them. When a user leaves a comment or uses a site that supports Gravatar, the Gravatar servers display their avatar next to the comment. This allows each commenter to have their identity throughout the world wide web. Gravatars are bound to a user's email address.
Set up a Gravatar here