JustHumans:About
From JustHumans
JustHumans is a tool for webmasters that greatly reduces form spam. It is free to get started and can be used on any website with HTML forms.
What is form spam?
Typically, forms are used by people for things like contact requests or comment submissions to blog postings. Form spam is erroneous submissions to these forms usually done by some automated (read: non-human) process.
How does JustHumans stop form spam?
JustHumans presents a simple test that is easy for a human to do but difficult for a computer, hence greatly reducing automated form spam.
How do I get started?
You can create a free account by going to the sign-up page and filling out the form.