New reCAPTCHA Global API Keys

I'm a developer for a website builder which has hundreds of sites with unique domain names.How can I generate a global API key for the new reCAPTCHA that can serve all of these sites?Will my existing global keys for the older reCAPTCHA work with the new version?I don't see any option for the global keys anymore.Ryan -- 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.