We really need to stop putting Calacanis discussions on here.
Which got me thinking, `vote-up sites` have the same view for each user. It would be interesting to see how user preferences could be detected and mixed in (like a personal ranking system), though I'm weary of a self inflicted echo chamber.
It uses total upvotes like HN, but mixes in your past preferences for similar material and a bit of Bayesian magic.
The idea is to provide a site that is able to scale better than the usual up/down vote sites.