If you want to "come and go at a whim", you are not a part of the HN community.......simply a surfer. In that case, why does upvote/downvote/karma matter? I believe HN functionality currently disables the "hit and run" attitude.
You misunderstood the OP. He isn't saying that he wants to come and go at a whim; he's saying that what he's allowed to do by the HN software comes and goes at a whim. (In this case, presumably Paul Graham's whim.)
