Spam blocker for a simple guestbook?

[jeffhayman.com]

Would yo know of how I can make it harder for spam to get throught to my guestbook? I was thinking an visual confirmation tool of some sort... Any ideas would be great!

[sleipner]

would that be kinda like a commenting system people have on their blogs?

[jeffhayman.com]

No. Its more like just a really simple php script for my love dedication (http://jeffhayman.com/jeffloveschantal) site. If you go down to Guestbook you'll see what I mean. Its really starting to bug me so I think Im just going to have to change the guestbook to something a bit more secure. Thanks anyway. :)

Jeff

[oleg24]

I'm using http://www.protectwebform.com works great.

[Twey]

Yup, that's good. You could also code your own using PHP and the GD image-manipulation library.