So why ask the user to enter an OpenID login and then follow up with an email address? An analogy: you're filling out a form and you think you're done because t

So why ask the user to enter an OpenID login and then follow up with an email address? An analogy: you're filling out a form and you think you're done because the front page is short and sweet. Then Mr Evil Banker Man tells you, actually, you missed the back side and that's long and convoluted. That's happened to me and I always felt betrayed, as if being led into something naughty and the person doing the leading is hiding something. In short, there is something stopping me from asking for the email address, and that's usability and trust building.