I'm curious as to what you mean by rank. Is this a instead of a simple up/down signal you get something like a +10/-10 scale to rate how much you (dis)agree wit

I'm curious as to what you mean by rank. Is this a instead of a simple up/down signal you get something like a +10/-10 scale to rate how much you (dis)agree with a particular comment/link and then looking at the distribution of scores? Or maybe something like a rank vote of all comments at a particular tier?