The Feds and private sources have pulled information about hazardous chemicals and chemical plant emergency plans, maps of military bases and intelligence offices and pipelines, and other potentially expoitable information from the web, for fear that they might be used by Bad People.
Quoth Jim Makris, emergency coordinator for the EPA, “People have a right to know what kinds of risks there are, but unfortunately terrorists are people, too.”
The balance to this danger, of course, is that politically embarrassing or sensitive reports could be pulled as well, using this as an excuse.