prevent spam through contact form

“I usually use recaptcha but they're getting harder to read for humans so I'm thinking of ditching it for a simple solution like fourth monkey outlined. I read somewhere you could record the time the contact page loaded and compare it to the time the page was submitted and if it's less than 5 seconds (or whatever you set the threshold to) then it must be a spam bot as the form couldn't be filled out in less than 5 seconds by a human.”

“The logic captchas are much more user-friendly.

I've often wondered whether some of the visual ones might infringe disability discrimination legislation.”