1. Downvotes after Xkarma you can downvote frontpage items 2. Flags _soft_ downvote people unlock easiers 3. Mods have a ""super"" flag which is the ranking e

1. Downvotes after Xkarma you can downvote frontpage items 2. Flags _soft_ downvote people unlock easiers 3. Mods have a ""super"" flag which is the ranking equivalent of aging a post pre-maturely. So the weighting algorithm calculates the post as being much older then it actually is allowing it to slide off the front page faster.