We recently received this announcement from Google, they are replacing the "old" reCaptcha system with a newer, smarter, easier to use system.
Many of our clients have asked about adding a reCaptcha anti-spam mechanism onto their site's contact page (get a quote form, etc) and our advice was typically as follows:
- Avoid adding a reCaptcha field at all costs because it makes it more difficult for legitimate people to send messages through your site.
- Typically, we start by adding a security mechanism called Project Honeypot onto the site, which blocks malicious visitors based on their IP address.
- If blocking malicious IP addresses still doesn't cut down enough on the amount of spam that is sent through the form, then we look into adding a reCaptcha system.