spam is good for something

If your computer's connected to the internet, odds are you've received countless viral-burdened emails that read, "Dear Sir/Madam, we have logged your IP-address on more than 30 illegal Websites. Important: Please answer our questions! The list of questions are attached."

One very smart fellow in Germany received the German version of that Sober.Y spam, then, presuming it was real -- turned himself in to authorities. The polizei examined his hard drive and discovered an abundance of child porn.
boingboing.net