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Some objective standards can be applied to website judging fairly easily. There are sites that show if a site meets HTML standards and accessibility standards.

Bringing in a subjective viewpoint in the judging moves the websites in a direction to answer the question of how the general public would view the site which is important. The subjective nature of the judging is tempered by the fact that several judges review the site and their scoring is averaged to help mitigate any outliers. This also helps smooth out the scoring system where some judges tend to score higher or lower than others.