Plus-minus Leaders details the NHL players who are on the ice for more goals for than against. A player is awarded a plus for being on the ice when a regular-strength or short handed goal is scored and a minus when a player is on the ice for a regular strength goal against (or goal against while on the power play).
More about NHL Plus-minus Leaders
Critics say that plus/minus is a highly variable statistic that doesn't say much. For example, a defenseman might consistently be facing the other team's top line, hurting plus/minus. Plus minus also doesn't take into account ice-time or goaltender performance.