I blame the internet on a lot of things happening now where these atrocities are happening much to often. These sites where you can learn to build bombs should be taken down right away, This kind of sites where unheard of years ago when the internet started to emerge.Hopefully this sicko will be caught asap before more damage will be inflicted upon others in other states and in other events.Obama start to do something now!
Don't blame the internet. Anyone with the most basic knowledge of chemistry can build a bomb using commonly available components. This information is available in books as well. What do we do? Ban books? Make people take background checks before purchasing a chemistry text book, or visiting a hardware or gardening supply store? People with guns kill people as well (in rather larger numbers than by bombs) as do drunken people in automobiles. You want to ban cars and guns too?