According to Websense's just released 2010 Threat Report, the chances for an online search for current news and breaking trends leading onto malware-distributing websites are more than that of searching for porn and other objectionable content.

Specifically, data from Websense discloses that an online search, which looks for current news and breaking trends, is 22.4% times likely to lead onto infected or poisoned websites compared to search for porn, which is merely 21.8% times likely to lead onto infected or poisoned sites.

More: http://www.spamfighter.com/News-15403-News-Search-Yields-More-Malware-Compared-to-Porn-Search.htm