13of40 was talking about a single button that mass downvotes multiple comments. None of the default (nor popular) clients support this functionality, but you could script your own version using the reddit API.
I was talking about a button that sets the score for a single submission to zero and makes it stick. I know the numbers are fuzzed, but I don't think fuzzing will take something with a score of 1 and show it as 0.
> I don't think fuzzing will take something with a score of 1 and show it as 0.
If one or more people decided to mass downvote new submissions (which isn't exactly uncommon), or the submissions are controversial, they will show as 0 even if they're actually -/+ 2 (for example).
If you decided to mass upvote them you will initially see the total increment by one, however, subsequent refreshes will show you fuzzed numbers. I believe the more active you are (e.g., upvoting 30 posts in the span of a minute), the more aggressive the fuzziness will be.