Передача авторизации на сторонние сервисы это не только удобно, но и постоянные смены провайдера:
I wanted to reach out personally to let you know that we have made the decision to end of life the myOpenID service. myOpenID will be turned off on February 1, 2014.
In 2006 Janrain created myOpenID to fulfill our vision to make registration and login easier on the web for people. Since that time, social networks and email providers such as Facebook, Google, Twitter, LinkedIn and Yahoo! have embraced open identity standards.
For those of you who still actively use myOpenID, I can understand your disappointment to hear this news and apologize if this causes you any inconvenience. To reduce this inconvenience, we are delaying the end of life of the service until February 1, 2014 to give you time to begin using other identities on those sites where you use myOpenID today.
Larry Drebes, CEO, Janrain, Inc.