He was charged with the murder of Karen Ann Olson on Tuesday, but no one has any idea why he killed her. The story has a tenuous connection with Craigslist, but the fact that Anderson went to an alternative high school puts him in the company of Asa Coon.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.