title: How to protect a contact form without captcha?
body: <p>On my website I have a couple of forms where someone (without registration) can send message to specified, registered user. The form is simple, and I want to keep that way. What is the best way to protect a contact form againts spam and bots if I don't want to use any captcha?</p>
  
  <pre><code>Your message:...
  Your e-mail:...
  [Send]
  </code></pre>