I recently wanted to comment on a post that had a lot of downvotes. I think I was prompted to sacrifice some karma in order to post in it. Maybe something similar could be implemented for mass downvotes? Say if you downvote someone more than 5 times (or some threshold where it's less likely that you're downvoting the same person by chance) you have to sacrifice some karma to do so.
More than five times ever? That's going to be a problem for long-term participants.
More than five times in some fixed period? That would make more sense, though it might need extra information recorded in the database. The right way might be something like this. For each pair of users, store an "amount of recent downvoting" that decays exponentially over time and gets incremented with each downvote; then apply a karma toll that increases with the value of this. It would also be necessary to store the last time the downvote density was updated, so that the exponential decay can be applied properly.
To whoever has for the last several days been downvoting ~10 of my old comments per day:
It is possible that your intention is to discourage me from commenting on Less Wrong.
The actual effect is the reverse. My comments still end up positive on average, and I am therefore motivated to post more of them in order to compensate for the steady karma drain you are causing.
If you are mass-downvoting other people, the effect on some of them is probably the same.
To the LW admins, if any are reading:
Look, can we really not do anything about this behaviour? It's childish and stupid, and it makes the karma system less useful (e.g., for comment-sorting), and it gives bad actors a disproportionate influence on Less Wrong. It seems like there are lots of obvious things that would go some way towards helping, many of which have been discussed in past threads about this.
Failing that, can we at least agree that it's bad behaviour and that it would be good in principle to stop it or make it more visible and/or inconvenient?
Failing that, can we at least have an official statement from an LW administrator that mass-downvoting is not considered an undesirable behaviour here? I really hope this isn't the opinion of the LW admins, but as the topic has been discussed from time to time with never any admin response I've been thinking it increasingly likely that it is. If so, let's at least be honest about it.
To anyone else reading this:
If you should happen to notice that a sizeable fraction of my comments are at -1, this is probably why. (Though of course I may just have posted a bunch of silly things. I expect it happens from time to time.)
My apologies for cluttering up Discussion with this. (But not very many apologies; this sort of mass-downvoting seems to me to be one of the more toxic phenomena on Less Wrong, and I retain some small hope that eventually something may be done about it.)