If a web application has some sort of registration system (and most do), the registration page should be one of the most attractive, inviting, usable pages of it. It should make you to want to register, not repulse you. We don’t want the user to give up in the middle of filling it because they are fed up with it’s length or bad usability, or -even worse- not even attempt to do so, do we?
The most popular websites usually take this rule to heart and employ the simplest registration forms: Only the basic fields required, and most of the times, even without password/email confirmation.
I was wondering lately – what would be the simplest possible registration form?