Also, just because it is hilarious, let me paraphrase a certain RPG blogger: pretty much all evil book artifacts can either be found from the net or rented from your local library. What keeps them "safe" is that majority of people are too lazy to read them, majority of people who read them are too stupid to understand them, and majority of people who understand them are too afraid of the consequences to actually act on them.

It is sort of the same deal as with martial arts these days. It is not hard to find a club which would connect you to a real tradition and teach you genuinely functional ways for beating up people. But it might be bloody expensive, it takes years of dedicated practice to learn the skill, it involves sweat, pain and tears, and then if you ever use your martial arts to beat people up you'll be under scrutiny and potential punishment from the part of law enforcement and all other practicioners of the art. Hence, the amount of people who'll bother is limited.