What is Elo?

Elo is a ranking algorithm developed by Arpad Elo and most commmonly associated with chess. There are different variations, but the one we use works as follows:

1. Every item starts with an Elo of 1200.
2. When you choose one item over another, the winner gains points and the loser loses points.
3. The amount of points gained or lost is determined by the difference in Elo between the two items. If the winner had a higher ranking to begin with, the increase will be small - and vice versa.
4. New items gain/lose a larger amount for the first 30 turns.