Pop Up ads are doomed, now that Microsoft will make blocking them part of its browser, Internet Explorer. Explorer, ZDNet says, joins other web browsers by doing it, but because of its huge market share, it’s likely to kill off the concept entirely. No bad thing, you may say, but it will also hit advertising revenues and may kill off more than a few ventures that depend on ads.The moves by Microsoft and others are the result of deep consumer loathing of pop-ups. About 88 percent of broadband users and 87 percent of dial-up users in North America find that pop-ups interfere with their Web surfing experience, according to Forrester Research.