Below is an excerpt from an article by Rick Ross regarding Scientology's efforts to use information control on their members. It looks like they actually market a device that controls what web-based info their devotees can see!
In the LW, members were taught to self-limit their information. One of the first things I was taught, "Do not drink from many fountains." In other words, you should not gather and analyze information from various sources on your own. You will always be too immature. We will spoon feed you the information that you need to know, and we will also tell you what to think about it. Your job is to spout it back to us and others.
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culteducation.com]
"The most basic feature of the thought reform environment, the psychological current upon which all else depends, is the control of human communication [e.g. information]. Through this milieu control the totalist environment seeks to establish domain over not only the individual's communication with the outside (all that he sees and hears, reads or writes, experiences, and expresses). It creates an atmosphere uncomfortably reminiscent of George Orwell's 1984.
They [e.g. Scientology?] look upon milieu control as a just and necessary policy, one which need not be kept secret. At the center of this self-justification is their assumption of omniscience, their conviction that reality is their exclusive possession. Having experienced the impact of what they consider to be an ultimate truth (and having the need to dispel any possible inner doubts of their own), they consider it their duty to create an environment containing no more and no less than this "truth." In order to be the engineers of the human soul, they must first bring it under full observational control".