help with spambots...

Ok, so I instaled the human verification on my site... and it worked, but one or 2 days later the spam comments began again...what can I do? I checked the code 2 times and everything seems fine...
any help?
here's my guestbook:
http://www.happyfi.com/guestbook

You are using the image verification I see. I tested my entries and they both got blocked if I used the wrong code. You shouldn't be seeing any spam. If you are getting spam it is being manually submitted. If you have access to your logs check to see if you have had any referals from jet.com as I was getting some manual spam and they had all come from that site.

I checked my logs for jet.com but no luck... I find it hard to believe how someone could spend any time doing this idiotic spam thing.
The only track I have from this person(s) is that their IP starts with 200.40 and then it changes from post to post.
So... If I find the site that referrs to those posts and block the IP of the site will it work?

how much spam did you get after installing the image verification?

lets say... if I had like 10 or 15 posts per day, it was reduced to 1 or 2... so I'm positive it works... the thing is I thought this was actually a spambot passing through the verification code.
I dunno, I guess I just can't admit some peanut brain it's posting links about sex sites.

Always some peanut brain out there lol.