Problems
Can't remember your passwords? Tired of filling out registration forms?
--- It is OpenID that can solve these problems.
What is OpenID?
OpenID allows you to use an existing account to sign in to multiple websites, without needing to create new passwords.
With OpenID, your password is only given to your identity provider, and that provider then confirms your identity to the websites you visit. Other than your provider, no website ever sees your password, so you don’t need to worry about an unscrupulous or insecure website compromising your identity.
Benefits of OpenID
Accelerate Sign up Process at Your Favorite Websites
Reduce Frustration Associated with Maintaining Multiple Usernames and Passwords
Minimize Password Security Risks
How to Get an OpenID?
You can get an OpenID from any OpenID providers such as Google, Yahoo, Orange, myspace, and so on.
How to use an OpenID to log in a website that supports OpenID?
http://openid.net/get-an-openid/start-using-your-openid