You can use this product to show avatar pictures of your users from external sites, i.e. from gravatar.
To do this you set a list of URLs where the avatars can be found. The default uses gravatar.
The %(emailmd5hash)s part can be replaced with %(fullname)s, %(home_page)s, %(username)s or any variable that is available from the MembershipTool.getMemberInfo() dictionary on your site. So another example would be
The product also tries to set the facebookid variable for the MembershipTool.getMemberInfo() dictionary. So, if plonesocial.auth.rpx is installed and the user uses facebook to login, you can also use