Pop-up/under ads pay off for advertisers... for now.

Most Web surfers would agree the maker of the X10 camera has the most annoying ad campaign online today. Visit any site and left behind, like trash at the beach, is the camera's pop-up ad. The campaign is undoubtedly irritating, but it also appears to be effective. In addition to generating groans from cubicle dwellers across America, the X10's has captured another honor: It's the fourth-most-visited Web site in the country according to Jupiter Media Metrix's June rankings, which were released on Thursday.