If moderation is entirely automated, it will scale to anything but can be abused without limit. If it's part automated and part human, the trolls can just abuse it to a point where the human moderators can't cope. The abuse can be scripted, detecting and fixing the abuse reliably can't. So your second example is just wrong.
If the number of "downvotes" passing N didn't automatically hide posts, one effect of the abuse would stop, but it would still create a todo list for the moderators that they couldn't cope with and so moderation of genuinely abusive comments would break down.
If this were easy, Velocio wouldn't have to worry about OSA in the first place. It's hard, and simplistic solutions fail. You're suggesting a solution that dates back to the early days of Slashdot and kuro5hin and it didn't work then, when the Net was a lot smaller.
If moderation is entirely automated, it will scale to anything but can be abused without limit. If it's part automated and part human, the trolls can just abuse it to a point where the human moderators can't cope. The abuse can be scripted, detecting and fixing the abuse reliably can't. So your second example is just wrong.
If the number of "downvotes" passing N didn't automatically hide posts, one effect of the abuse would stop, but it would still create a todo list for the moderators that they couldn't cope with and so moderation of genuinely abusive comments would break down.
If this were easy, Velocio wouldn't have to worry about OSA in the first place. It's hard, and simplistic solutions fail. You're suggesting a solution that dates back to the early days of Slashdot and kuro5hin and it didn't work then, when the Net was a lot smaller.