From AB FAQs:
Please see the below article for information on how to upload an avatar:
http://www.theanswerbank.co.uk/AB-Editors-Blog/article/what-is-an-avatar/
which takes me to this
Gravatar is the service that The AnswerBank uses to display avatar images across the site. You need to sign up to Gravatar (found here
http://en.gravatar.com/site/signup/) with the SAME email address that you signed up to The AnswerBank with and have just found from your profile page.
clicking the link gives me
Sign in to Gravatar with WordPress.com Connect
Gravatar now allows you to use a WordPress.com account to sign in. If you have a WordPress.com account already then you can use that, or you can create a new one.