It doesn't matter if you think they are wasting their vote. It's their vote, not yours. if they want to change it, they can always do so. You don't have a right to dictacte the way other people vote.
I second the seconding method.
Of course I don't have that right, which is why I am pointing out the benefits so that the majority can form an angry mob which, while not actually possessing superior rights(actually, the concept of rights is pretty much completely fictional to begin with) has a whole "might makes right" thing going for it...
But I am not aiming to impose my will on others, I am aiming to improve the extent to which the votes represent the community's will and increase the community's ability to reach consensus. I have only ever pointed out when people are or are not adhering to the principal, and if you impose yourself upon others to exclude the option to submit commentary than there is little than anyone can do to argue for any sort of change, thus making improvement largely a matter of pure chance...
prevents the list from inflating with zero and one vote items
I do not understand the problem with zero-vote items, as they do not influence the outcome. Is the screen-space they consume an issue?
And I will note that voting is currently regulated and enforced. I could switch to my weighted voted system, where I have one vote that is worth 4, one that is worth 3, and one that is worth 2. By doing so in the current system, I would then have a total of nine votes. I rather suspect that people would be rather vocal in preventing my use of such, and would remove my votes from the chart when they copy it. So I would ask that people who say "The idea of regulating how people can and can't vote is not ok" to kindly... accord themselves in a fashion that can be responded to without insults.