Its not a phone number, its a code when you enter it at the end of their URL, it redirects you to a charge page. 37 Signals charge page: http://37signals.com/c

Its not a phone number, its a code when you enter it at the end of their URL, it redirects you to a charge page. 37 Signals charge page: http://37signals.com/charge http://37signals.com/charge Here are some other examples: Wufoo - http://wufoo.com/charge/ http://wufoo.com/charge/ SlideRoom - http://www.slideroom.com/charge http://www.slideroom.com/charge If you're receiving payments via PayPal its easy to do, all you need to do is edit "Credit Card Statement Name" which is found in My Account > Profile > Payment receiving preferences (Under Security and risk settings).