Helps you to keep an in game record of all the players who decide to gank you. Alters the tooltip background for any enemy player who's name is on your Gank List so you can instantly tell whether or not they are on your list.
It automatically prompts you with the name of your attacker if you get killed so that you can easily add this person to your list. (This function is automatically disabled in PvP Battlegrounds).
Easily accessable through a minimap button that you can position anywhere you wish, works well alongside the existing WoW UI and requires no dependencies.