Originally Posted by littlegiant

I killed spam dead on my feedback form by using Javascript to write out a hidden input:

<script type="text/javascript">
<!--
document.write('<input type=\"hidden\" name=\"xyzxyzxyz\" value=\"test\">');
// -->
</script>

Then I made that hidden input a required field in the script that processes the form.

Then I used Javascript to write out the Submit button.

<script type="text/javascript">
<!--
document.write('<input type=\"submit\" value=\"Submit\">');
// -->
</script>
<noscript>Javascript must be enabled to submit this form.</noscript>

Boom. No more spam.

Not going to win any awards for accessibility (since Javascript must be enabled to submit the form) but it worked.