Global Site Key Support?

We have a web application that can be accessed from any domain that the end user wants to use.  Is there a way to set up a global key for Recaptcha so we do not need to explicitly specify the domains in the key settings? I know this has been asked multiple times, but I'm hoping to get a response from the Recaptcha support team. -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.