If you don't have a cell phone, why don't you type in your land line number?
I dont want give personal info to a global info company as Goo, specially after Snow den, which show nothing new so far.
Also that validation cell number pgm are well done and reject fake numbers (it show a invalid phone number alert msg) as 1111.1111 etc and even land lines phones numbers, which here starting with 2 or 3 usually.
I would like a free email service as I dont want inform the credit card details to that company to pay a temporary email service, as usually people are forced to change email provider after a few years for various reasons, inclusive for security.
I plead the idea that the email provider does not should know much about the user for security reasons.