Whether or not you know it, most of you have fallen victim to "clickbait." It's that provocative, must-click-now-to-see-what-it-is marketing attempt.
noun: clickbait; noun: click bait
(on the Internet) content, especially that of a sensational or provocative nature, whose main purpose is to attract attention and draw visitors to a particular web page. "These recent reports of the show's imminent demise are hyperbolic clickbait"
Here's an example: "A dog finally sees his owner and what he does next will amaze you!" or "Top ten lists of most horrifying accidents. #6 will completely gross you out!"