Like with many loot distribution systems, SKG provides a mechanism to fairly distribute loot when a boss is killed or another loot event occurs. Unlike many systems, it does NOT require you to track values for items, or maintain some sort of "score" for individual users.
In the simplest form, when a loot event occurs, any player on the appropriate roll list may elect to bid on an item. The bidder who is highest in the list (or has the lowest numbered list position) wins the bid. What occurs when a player wins the bid is really the most important part. The winning player suicides to the bottom of the roll list and all other players (in the current raid) move up a notch and improve their position.
The final element that is important to realize is that players who are not present in the current raid DO NOT move in the list. All players move around them. This serves the dual purpose of rewarding players who are participating more often, and NOT punishing people who don't show up as frequently.
