They also focus on the ease of filling out the form, the anonymity of responses, and the inclusion of non-citizens in the count.

他们还集中在填写表格的安逸，不愿透露姓名的回应，以及非公民在数列入。

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Precisely how it goes about that is unclear, though, and there is discomfort among some in the publishing industry who worry that preorders are being corralled and bulk purchases are being made to appear like single sales to qualify for inclusion in best-seller lists, which normally wouldn't count such sales.

WSJ: Authors Buy Their Way Onto Best-Seller Lists