Hi guys, I'm getting started here and have set up a web capture form on my site.  It's identically to the one I used to have except that it's a zoho form now.  

Instantly I started getting spam leads rolling in  - all kinds of crap- porn, blackjack, you name it.  Took less than 24 hours to have dozens.  I *never* got spam in my forms before.  

What kind of junky form code is this?  How can I code this in a way to stop the spam?  Please don't ask me to install a captcha, that's a ridiculous nuisance I don't want to inflict on people.

Gracias...