Well, this is interesting...
Not sure what to think of all the legal ramifications of this, but I have to admit, searching for techniques to kill someone on an open search engine seems high in the "not so bright an idea" department.
Google Searches Used To Convict Hit-And-Run Driverfrom the google-searches-in-a-court-of-law dept
In the past, we've noted various lawsuits where Google searches done by the accused were used against them in a court of law. There was the guy who searched on "neck snap break," days before his wife was murdered, and then there was the woman who searched on "how to commit murder" and other rather damning phrases like "instant poison" and "undetectable poisons," before her husband was murdered.
In yet another such case, an investment banker has been convicted of a hit-and-run that killed a woman, after his Google searches soon after the accident turned up the phrase "hit and run." The guy had claimed that he believed he hit a deer, but his Google searches suggested he knew it was a person. Beyond just searching for the phrase hit and run, he also did searches on: "auto glass reporting requirements to law enforcement," "auto glass, Las Vegas," auto parts, auto theft, and the Moraga Police Department.
Since the incident was in California, the thinking was he was looking to get the damage to his car repaired out of state to avoid any suspicion from the auto repair place. While the guy appealed the ruling saying that even with those searches he didn't have any actual knowledge he had hit a person, the appeals court didn't find that to be very convincing.
http://techdirt.com/articles/20090115/0559143421.shtml
