Your Weight Maxed Out... Part 4 of 5.
At the moment, but not for long
, there is a cap on your weight so large sites won't be flooding the network with ads. This explains why your weight is 'stuck' at 40,499 or 80,999 etc. There's a different cap for each Base URL PR. Increasing your pagecount won't increase your weight in such a case so them extra ads you serve for others are a 'bonus' to the network. Increasing the number of ads (up to five) does increase your weight because the cap is applied before the number of ads are taken into the equation. Referrals can also take you up higher in weight. You could try and increase your PR to take you over the treshold and increase your weight that way as well.
Shawn has confirmed that the cap will be removed soon after he "comes up with a good logarithmic scale for it".Read On: Weight Issue Check List. Part 5 of 5.