Enter the numbers below to prevent spam
I have seen many site asking users/ visitors to enter a certain type of numbers before submitting a form to prevent spam attackers.
How does it work actually? Does it really effective? Or is there any other better solutions to avoid spam attacks?
I am trying to look for tutorial or code to write this part for my blog but still can't find any resources yet...
Please let me know if u have any ideas.
The phrase you're looking to search against is Captcha.
and yes it dramatically reduces spam. there are ways around it but the common spammer doesnt have access to them.