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I agree that your first point about misspelling the persons name should be included. Its a common error (I have been guilty) and an easy answer should be accessible in the FAQs.

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The query about self-sponsoring is included in the enrollment questions so i don't think there is a need for a separate category.

The query about misspelling is a good one, there is some support, and I agree that it should be included separately.

Officially accepted as a bonus category (a separate comment opening that bonus category will be made).