Ten types of arguments commonly used by advocates of fringe concepts (from Wikipedia editors). Very interesting.

At the present time, Wikipedia does not have an effective means to address superficially polite but tendentious, long-term, fringe advocacy. Some contend that this is a main flaw of Wikipedia; that unlike conventional encyclopedias, fanatics can always get their way if they stay around long enough and make enough edits and reversions.[3] In this sense, Wikipedia’s ‘commitment to amateurism’ does not always work for the best interests of the project.