I know how it works.

If you are rated high and you win - you go up a couple of points. If you are rated high and lose - you go down A LOT of points! :-)

Possible a good rating system for skill type games like chess, but when you start adding more "luck" into games (like a little for Backgammon, and a lot more luck for Battleboats) - it may not bs the best rating system.

-- Which I'm not complaining about the current rating system, but it never hurts to look at different options.