Constant popups are really annoying! Especially the ones that are full screen or the ones that use deceptive design and are difficult to close. I don’t know why some site owners use them because it really freaks me out and makes me never want to use the website again. There’s nothing bad in popups that are used correctly. For instance, promolayer.io offer beautiful popups that help to boost sales. They are not annoying and appear only when a user wants to leave the website without purchasing anything. Such popups offer the user special offers and coupons that might interest them.