Different spam protection installed

I have changed the spam protection method because we get spammers lately. This gives me that the current protection has been broken.

I have changed it to one that requires a human response. It is possible that it can be beaten, but I really doubt it.

If the spamming gets increased a lot over the few weeks, I will revert back to the older protection and find a better one.

For those who're interested in how ReCAPTCHA has been beaten, check out the following link:

http://michaeljaylissner.com/blog/more-security-papers-breaking-recaptcha-and-proactive-methods-for-secure-design

On the link there are 2 PDF documents presented. The first has a very intriguing article in how ReCAPTCHA has been beaten.