Yes, downvoting is a feature available to users with 500+ karma (according to http://news.ycombinator.com/item?id=3782217 http://news.ycombinator.com/item?id=37

Yes, downvoting is a feature available to users with 500+ karma (according to http://news.ycombinator.com/item?id=3782217 http://news.ycombinator.com/item?id=3782217)