Rupert Sheldrake has recently complained about the manipulation and biased information posed about him in Wikipedia by trained atheists and "skeptics":
This summer, soon after the TED controversy, a commando squad of skeptics captured the Wikipedia page about me. They have occupied and controlled it ever since, rewriting my biography with as much negative bias as possible, to the point of defamation. At the beginning of the “Talk” page, on which editorial changes are discussed, they have posted a warning to editors who do not share their biases: “A common objection made by new arrivals is that the article presents Sheldrake’s work in an unsympathetic light and that criticism of it is too extensive or violates Wikipedia’s Neutral Point of View policy.” Several new arrivals have indeed attempted to restore a more balanced picture, but have had a bewildering variety of rules thrown at them, and warned that they will be banned if they persist in opposing the skeptics.
...The Guerrilla Skeptics are well trained, highly motivated, have an ideological agenda, and operate in teams, contrary to Wikipedia rules... They have already seized control of many Wikipedia pages, deleted entries on subjects they disapprove of, and boosted the biographies of atheists.
As the Guerrilla Skeptics have demonstrated, Wikipedia can easily be subverted by determined groups of activists, despite its well-intentioned policies and mediation procedures. Perhaps one solution would be for experienced editors to visit the talk pages of sites where editing wars are taking place, rather like UN Peacekeeping Forces, and try to re-establish a neutral point of view. But this would not help in cases where there are no editors to oppose the Guerrilla Skeptics, or where they have been silenced.
If nothing is done, Wikipedia will lose its credibility, and its financial backers will withdraw their support. I hope the noble aims of Wikipedia will prevail.