I reported earlier this morning that some scam artists are using DNS Cache Poisoning to redirect your PPC and organic listings to other pages. First reports of this come from WebmasterWorld, where it has been documented that an advertiser was targeted and exploited. Basically, the attacker will poison your DNS cache (if it is possible) and then "redirect a popular search engine to a pop-up ad site," or something similar.
Introducing SES Online
Want to view one of the sessions you missed or listen to an especially informative presenter a second time? SES New York sessions are available for purchase on ClickZ Academy's new e-Learning site. SES is now Online!