Ratings in FontStruct originally used a simple averaging formula.
Starting in September 2009, the average rating value of a FontStruction is calculated with a balancing formula, which “pulls” ratings towards the system wide average.
FontStructions with only a few votes can have neither very high nor very low ratings. As they get more votes, the balanced rating gets closer and closer to the true average.
In general, for high-rated FontStructions, the “balanced rating” will be lower than the true average. For low-rated fonts with only a few votes, the “balanced” rating will be higher than the true average.
The old average ratings are still displayed under the name “average rating” for comparison.
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