When registering, this form gives users a visual indication of their relative password strength, along a tip on how to make it stronger. In trying different password types, I found the strength evaluation was a bit simplistic, but the idea is still is likely an effective approach in encouraging users to create more secure passwords.
From: MyOpenID
Tabblo uses ajax to keep the user's context while presenting the registration form. The overall effect is super easy and quick registration.
From: Tabblo
This form uses left-justified field labels (which, depending on how variable the label length is, can cause fields labels to be widely separated by the associated field - as is the case in "Your Name"). However, the row shading here helps the eye track. Also, I love the big red submit button. Overall, it's a clear and clean layout.
From: Target
