US-Indian Spacecraft Captures Mexico City Subsidencescience.nasa.gov6 points·by hsuresh·há 3 meses·0 comments
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hsuresh·há 16 anos·discussI agree with you. The only times i have wanted to downvote was to mark some comment as spam and/or troll. Given that we have a 'flag' link on comments, i don't see a need for downvote, except to undo a upvote.