Under Administration center > Users you can enable Gravatar avatars and/or allow users to upload their own avatars. You can also set a default avatar.
Enable Gravatar avatars
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.