alanback: IMHO there are exactly three points that should be fixed in order to make a great backgammon site out of BK, where the experts would love to play :

1) Autopass and autoplay, regardless of the settings of the opponent, and which can trigger one way of the other even when cubing is an option.
2) A fair rating system.
3) A working .mat export.

2) and 3) are really easy to implement. The .mat export is almost done but still has an annoying bug, as for the rating system, adapting the BK rating system is just as easy :

A) Before putting the rating difference into the BK formula, multiply it by the square root of the match length (and then divide it by 5 if copying the FIBS formula, but that is not essential).
B) After calculating the gain or loss in rating, multiply it by the square root of the match length (and divide it by 5 if wished).

coan, you are right that Fencer might recalculate all ratings if he changes the rating formula, which needed a downtime the last time he did it. If he does it, I bet that I will lose my #1 spot to XXXXXXX (the unnamed computer user).
But frankly, I don't really care whether he does it or not. One way or the other, once the system is corrected, the ratings will converge to their accurate values in the long term, and what I care about is the long term.

Andersp, you are wrong in thinking that the problem lies within the higher-ranked players playing between themselves. Actually, the surest way to exploit the current rating system is to play 21-pointers against low rated opponents, when one wins non negligible rating points with almost no risk.