http://news.bbc.co.uk/2/hi/technology/7118452.stm

A huge campaign to poison web searches and trick people into visiting malicious websites has been thwarted.

The booby-trapped websites came up in search results for search terms such as “Christmas gifts” and “hospice”.

Windows users falling for the trick risked having their machine hijacked and personal information plundered.

The criminals poisoned search results using thousands of domains set up to convince search index software they were serious sources of information.