"A lot of people have been reporting a new breed of pop-ups on the Web," Dotzler said. "This increasing menace is rooted in the pop-up capabilities of plug-ins like Flash and Java. If you're seeing pop-ups and pop-unders, you're probably visiting sites that have Flash or other plug-ins and those plug-ins are being exploited by advertisers to abuse you with annoying pop-ups and pop-unders."
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