Can any user downvote, or is some karma needed? It would be good if only users with karma at least, say, 20 could downvote, because that would prevent creating a new account for safe mass downvoting. (Similar system is used at StackExchange.) I'm saying this because if we adopt a policy of detecting and punishing mass downvoters, their logical next step would be to mass-downvote using a different account.
You can't give more than 4 * your karma number of downvotes.
If an obvious case of mass-downvoting is detected, there should be an ad-hoc tribunal made by three people from MIRI / CFAR / Trike. The tribunal should decide whether the situation deserves punishment or not. It is their choice whether their decision includes asking the offender's explanation.
This will waste too much of their time and it is a bit too subjective.
You can't give more than 4 * your karma number of downvotes.
That would be a lot of downvotes for someone who has been around a while. I'd get bored with downvoting long before I used up my quota.
Below is a message I just got from jackk. Some specifics have been redacted 1) so that we can discuss general policy rather than the details of this specific case 2) because presumption of innocence, just in case there happens to be an innocuous explanation to this.
So... thoughts? I have mod powers, but when I was granted them I was basically just told to use them to fight spam; there was never any discussion of any other policy, and I don't feel like I have the authority to decide on the suitable course of action without consulting the rest of the community.