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An example of the furor raised over this issue can be found in the archives of the news. groups under the keywords ``Richard Depew,'' a proponent of a system called ``retro-moderation.''

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A technical drawback to storing vote annotations on the articles themselves is that doing so would increase the disk load on the server machine. The arrival of new votes at a server would cause random disk accesses to update article header fields. These extra disk access would interfere with user requests to retrieve articles, causing disk contention to increase.

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PARC news reading sessions involving 0 to 4 newsgroups were not counted as they do not give a good indication of how many news groups a user subscribed to.

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An initial release of the modified xrn client placed the filtering controls in the main window and resulted in complaints that the new buttons had caused the original buttons to move to different locations. This change resulted in users having to relearn their mouse-clicking patterns and clearly violated our efforts to seamlessly integrate collaborative filtering into the news reader.