What are the factors for how much your rating goes up or down?  If you resign as a backgammon instead of a 1 pt. game, does your rating go down more than it would than if you resigned as a 1 pt. game?  I ask this because someone told me it doesn't matter how much you lose by as far as your rating goes, the only thing FIBS cares about is if you win or lose.  They went on further to explain that the factors for your rating were based on certain criteria such as if you were playing someone with a higher rating than you.  Where can I view the FIBS rating criteria?

Ratings are explained here:  http://www.fibs.com/ratings.html