When I am presented with an obtrusive popup to sign up for some website, I've been in the habit of just filling it in with a random email address pointed at the

When I am presented with an obtrusive popup to sign up for some website, I've been in the habit of just filling it in with a random email address pointed at the site's own domain. Funnily enough, some sites will stop you from submitting an email address associated with the current domain because even they know how annoying and unpleasant they are