Title changes are explained in the guidelines: http://ycombinator.com/newsguidelines.html http://ycombinator.com/newsguidelines.html Up- and downvoting depend

Title changes are explained in the guidelines: http://ycombinator.com/newsguidelines.html http://ycombinator.com/newsguidelines.html Up- and downvoting depends mostly on karma thresholds, though there are also some protections against karma-bombing and voting rings. You can't post comments on items that are dead or over 45 days old. Most of the details can be found in the source: http://www.ycombinator.com/arc/arc3.tar http://www.ycombinator.com/arc/arc3.tar