How do I enable reCAPTCHA?
To add spam protection to the Email-based self-registration new account form with a CAPTCHA element: • Obtain a reCAPTCHA key from http://recaptcha.net by signing up for an account (free) then entering a domain. • Copy and paste the public and private keys provided into the recaptchapublickey and recaptchaprivatekey fields in the manage authentication common settings in Administration > Users > Authentication > Manage authentication. • Click the “Save changes” button at the bottom of the page. • Follow the settings link for email-based self-registration in Administration > Users > Authentication > Manage authentication and enable the reCAPTCHA element. • Click the “Save changes” button at the bottom of the page.
