(aka identity consumers or membersites) to determine automatically,
without end-user intervention, the most appropriate protocol to use.
Examples of such services are:
* Single sign-on across web sites
* Profile exchange and form filling
* Blog anti-spam
Yadis provides the first step for any service that uses identifiers for
authentication, accountability, privacy controlled data exchange and more.
WWW: http://search.cpan.org/dist/Net-Yadis/http://yadis.org/wiki/What_is_Yadis
