+For openid, openavatar sucked and is now dead. So we need to use an email
+address instead, I guess. Problem is that the email address of a given
+openid is only known when that user is logged in and making a change.
+And we don't want to leak an openid user's email into a page either.
+Hmm. Suppose the gravatar hash could be calculated from the email address
+and embedded instead of the openid?
+
+Or, for openid, could use <http://paulisageek.com/openidavatar>.
+