I think there's a limit to that though, infohazards like how to make a bomb from common household materials and the like for example. In fact, the show mythbusters once made an episode about this exact topic, and they thank God, decided that it'd be responsible to censor/not air one of the tests they had conducted as it would be harmful if such information got out. Statistically, you know a few people would've tried out that recipe and blown their fingers off or something. I'm pretty sure I know what that compound was, and it's the same explosive that basically got the TSA banning liquid containers over 100mls or some shit.