Earlier quoted context omitted.
I agree that might be the case but actually the Twitter and OpenID authentication is much safer. 1) When you authenticate with Twitter or OpenID its all done on Twitter or your OpenID providers site. We cant snoop your credentials at all, you dont enter it on our site. 2) Sure authentication is an easy feature but this way we dont need to ask you for your details again, you let us talk to your service and use your ex…
You forget though that you've studied all this stuff. Casual users of your thing won't have. So when you say "Give me your Twitter username and password", they'll say no. It doesn't matter that it's actually safe. It certainly doesn't sound safe, and that's all that matters. Argue against it at your own peril. People are comfortable with user/pass.
You're comfortable with new user/pass and it doesn't sound safe to you.