Ben et. al: Thanks everyone for your help in getting our CGI signup form to work with our Listserv. I'm having users test it out now. To prevent automatic signups and mass spamming to our ListServ, we'd like to incorporate an Anti-Bot to ensure that only humans perform actions on the Listserv. Free is preferable but I'd like to know what I should look at in this regard. We're not keen on using the Vorras Antibot because we don't want to load Python on our server. Recaptcha seems possible but I believe it is dependent on Recaptcha servers and services. That's why I was wondering if anyone is using an Anti-bot that is simple and free and does the job of blocking bogus registrations etc. Thanks for any push in the right direction. Dan