What is reCAPTCHA?
reCAPTCHA is a free service that protects your website from spam and abuse. reCAPTCHA uses an advanced risk analysis engine and adaptive challenges to keep automated software from engaging in abusive activities on your site. It does this while letting your valid users pass through with ease.

Learn how to configure google recaptcha, go to:
https://faq.mformula.net/content/19/1487/pt-br/como-configurar-o-google-recaptcha.html

https://faq.mformula.net/content/19/1488/en-us/how-to-configure-google-recaptcha.html

Need an e-commerce shopping cart, electronic catalog or virtual supermarket, check out the plans:
http://www.mformula.net/products.php?cat_id=4&subcat_id=32
or
http://www.ecomm.one