How To Obtain a Set Of Google reCAPTCHA Keys
google.com/recaptcha/admin/create
1. Go to the URL above
Fill in the fields use the help boxes for what details are needed
To decide what Type follow this link for details developers.google.com/recaptcha/docs/versions
2. Label -add a name t easily identify your site.

Select type desired
Enter your website domain name and hit the +
Hit Submit
Once the above is completed and the "Submit" button has been pressed. You can continue to obtain your Site Key and Secret Key.
The use of a reCaptcha processor is used to reduce the amount of spam for website forms (particularly comments). Provide here the captcha processor that will be called to validate the user response to the captcha request. Your reCaptcha Processor must implement reCaptchaSupport. The default value for Recaptcha (http://www.google.com/recaptcha) is
NorthwoodsSoftwareDevelopment.Cms.Display.RecaptchaSupport, UISupport
Use of reCaptcha outside of Content sites is rare.
An XML snippet of configuration data required by the reCaptcha Processor. Use a custom XSL to generate the HTML appropriate for your captcha. Default.xsl ships with support for Recaptcha (http://www.google.com/recaptcha)
The default value used by the default processor for reCaptcha is
<PublicKey>Place your public key obtained from https://www.google.com/recaptcha/admin/create here</PublicKey>
<PrivateKey>Place your private key obtained from https://www.google.com/recaptcha/admin/create here</PrivateKey>
3. Add to your Titan CMS Instance
Enter your Admin Dashboard within your Titan Workstation. Under Content Sites, locate the proper Globe and select it. Within the General Settings, under Site Configuration, scroll down to the Captcha Processor and Captcha Config XML options. See the help icons to complete the fields with your code from reCaptcha