I've seen this clever marketing tactic on many websites - when I am about to leave their website and move my mouse up fast to the top of the screen (to close their tab in Chrome, etc), the site reacts real fast, showing me some large modal window with "subscribe" email capturing form, or with "special offer" . The timing is really good, and I usually stop for a second to decide on that modal window. I do it almost unconsciously, and so I woul