Getting a Form's Structure Right: Designing Usable Online Email Applications
http://www.boxesandarrows.com/view/getting-a-forms98

Kirmani, Afshan
Boxes and Arrows
2008

Abstract:

There are a million websites out there. There are a million email service providers out there. How do you ensure that you gain the right audience to join your service? What are those factors that will help users move ahead and become your loyal customer? Part of the answer has to do with the first step: Registration!