The label is a small problem. The concept is a big problem.

http://www.quora.com/What-s-wrong-with-OpenID

"The short answer is that OpenID is the worst possible 'solution' I have ever seen in my entire life to a problem that most people don't really have. That's what's 'wrong' with it."

That's insightful.

You're right, most people don't have a problem with passwords. They use "password" everywhere and it's never a problem!