This plugin allows users to use their [OpenID](http://openid.net/) to log
into the wiki.
-The plugin needs the `Net::OpenID::Consumer` perl module. The
-`LWPx::ParanoidAgent` perl module is used if available, for added
-security. Finally, the `Crypt::SSLeay` perl module is needed to support
+The plugin needs the [[cpan Net::OpenID::Consumer]] perl module. The
+[[cpan LWPx::ParanoidAgent]] perl module is used if available, for added
+security. Finally, the [[cpan Crypt::SSLeay]] perl module is needed to support
users entering "https" OpenID urls.
+This plugin has a configuration option. You can set `--openidsignup`
+to the url of a third-party site where users can sign up for an OpenID. If
+it's set, the signin page will link to that site.
+
+This plugin supports the
+[myopenid.com affiliate program](http://myopenid.com/affiliate_welcome),
+which can be used to help users sign up for an OpenID and log into your
+site in a single, unified process. When you create the affiliate, specify a
+login url like `http://example.com/ikiwiki.cgi?do=continue`. Once the
+affiliate is created, set `openidsignup` to point to the affiliate's signup
+url.
+
This plugin is included in ikiwiki, but is not enabled by default.