Salesmen
“Search engine poisoning can be very dangerous for internet users, as they trust the search engine they’re using to filter out malicious links, and in this case it seems to be Bing which is letting internet users down,” said Fraser Howard, principal virus researcher, Sophos.
I don't think people trust a search engine to filter out malicious links. For one thing many, perhaps most, people can't tell the difference between a search engine and a browser. For another, this guy is trying to sell something, so his "filtering" is suspect as well.