This is a good explanation for some behavior I see on one of my sites. The site is barebones html with a tiny amount of js to support an email list signup form.

This is a good explanation for some behavior I see on one of my sites. The site is barebones html with a tiny amount of js to support an email list signup form. There's some quick validation on the backend but the response cycle is super quick. I get double signups every now and then.