"At least one in 10 web pages are booby-trapped with malware, according to Google.

A five-strong Google research team found that 450,000 pages, out of a sample of 4.5 million pages, contained scripts to install malicious code, such as Trojans and spyware on vulnerable PCs, the BBC reports. This is a conservative estimate - another 700,000 pages given the once-over were thought to be suspicious by Google."

Article Link: http://www.theregister.co.uk/2007/05/11/google_malware_map/