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I noticed today that a request for protection came up due to the the large number of me-too answers on a trending question I answered recently. This got me thinking, since trending questions get far more attention than the average question, should questions that trend be automatically protected?
On the upside, this does seem to be a common problem and the auto-protection could be put in place only while the question is trending. On the downside, it would make it more difficult for new people to participate in answering a trending (highly visible) question so it could be a barrier to entry.