I talk about Windows Azure at several events, such as: SQL Saturdays, Code Camps and User Groups in my region. One thing I hear about when people sign-up is that they don’t want to supply a credit card just to try the services. Now MSDN subscribers are no longer required to provide payment information. MSDN subscribers will get a credit for each month. If you want to exceed your credit you can then provide payment information. This won’t satisfy everyone but it’s a start.
When signing up for a Windows Azure subscription use the same Microsoft ID (aka: Live ID) you use with your MSDN account.
By the way, if you need a Windows Azure subscription, here is the link for a free trial.