Confronting a pop-up is one of those times when your gut reaction might lead you down the path of frustration and tears. If the "X" is spring-loaded with malware, anywhere you click on the pop-up could trigger that virus.

This is the path less traveled--the majority of pop-ups truly are the ads they appear to be--but when a pop-up does deliver malware, undoing the damage could be a tense, jittery journey. We get enough panicky Spyware Horror Story submissions to know that so-called button flips and booby-trapped Close buttons continue to deliver malicious payloads.

So what is the best practice for closing a pop-up? CNET Executive Editor Tom Merritt demonstrates in this Quick Tip video.