One thing I find a bit depressing is that even though this scheme hugely reduces the time one spends on HN by filtering the articles according to votes, the top voted articles are not the ones that I would want to read. I usually come here for that "hacker" hacker news (hackerhackernews.com used to be something like this, but now the domain name has expired it seems). Anyway I am sure there will be people who find your service really useful.