Hope you are doing well.
So I have several free lists on various sites, & one of my sites keeps getting bots or idiots signing up for the free list & then never confirming their signup. Actually I don't believe it's a bot, b/c there's a drop down menu they have to choose from so they have to be humans.
I got someone to put a captcha in the signup process thinking that would stop it, but no such luck.
Any idea why they are doing this & how to stop it?