Five month old post, but I never-ever get pop-ups on ebay or anywhere else. I consider most all of them malicious. At most, if there was a pop up, my browser may show a message that it blocked it and gives the option to open or not.
Using Firefox and Chrome both with Adblock plus and uBlock. Have ccleaner that deletes evrything (configurable) when closing the browsers, and occasionally scan for malware, don't allow search toolbars that sometimes come loaded with software
Never had a "smartphone" so maybe it's mostly a phone thing?
