You're scrolling through your Twitter feed. You're intrigued by a headline. You click and get redirected to the website. You get about two words into the content and suddenly the screen is overtaken by an annoying pop-up. "Download our free e-book!" "Learn how to get more leads!" "Register for our conference!"  To many, a website pop-up can be as irritating as a door-to-door salesman and a telemarketing call during dinner happening at the same time. It's jarring. It's obtrusive. And after you've convinced me to click on your link, it's like a broken promise...