I think that this may drive certain undesirable behavior (e.g. duplicate story submissions, down-vote capability for new-ish accounts). On the other hand, points derived from the comments you make are probably a better indicator of the quality of your contribution to HN.
Do url submissions deserve points: http://news.ycombinator.com/submitlink?u=http%3A%2F%2Fnews.y...?
I think that this may drive certain undesirable behavior (e.g. duplicate story submissions, down-vote capability for new-ish accounts). On the other hand, points derived from the comments you make are probably a better indicator of the quality of your contribution to HN.