Hello...
So how many times have you seen someone offer you a free trial of something or other, but to get started you need to provide a credit card number, or use your Paypal account to sign up.
A lot of services or products even ask that you pay ONLY $1 to start any sort of trial and act as if you are getting an incredible value.
But what they are really doing is getting your credit card number or PayPal account locked into their auto re-billing feature...