This is a quote from the book "The Gentleperson's Guide To Forum Spies" by Cryptome.org
...'flush' the critical post out of public view it is simply a matter of logging into each account both real and fake and then 'replying' to prepositined postings with a simple 1 or 2 line comment.
This brings the unrelated postings to the top of the forum list, and the critical posting 'slides' down the front page, and quickly out of public view. Although it is difficult or impossible to
censor the posting it is now lost in a sea of unrelated and unuseful postings. By this means it becomes effective to keep the readers of the forum reading unrelated and non-issue items.
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