Actually I believe that draws "Should" affect the bkr, but they don't. For some reason bkrs are "not" affected by drawn matches.

I believe that this is an error in the system since a low rated player should have his rating rise after a draw and vice versa.

To back my statements up: I was rated about 2000, playing against a 1300. Both of us had played many games. After the draw (doh!) neither rating was affected, much to my amazement (of course i shouldn't complain in this case ;)

I have had a great number of draws, and watched the rating closely each time. Never has it been affected.