This is a very good collection of simple rules that should be read and practiced by all young scientists and established authorities alike. I do agree with all of them and complement the Rule 8 with two recommendations:
1. If you are writing a confidential review of a grant proposal or manuscript, never tell the reviewed author that you did so. This behavior suggests that you had a conflict of interest and conducted the review expecting future advantages.
2. If confidentially is not required and you prefer to sign your review, do that irrespective of its content. Do not sign only positive recommendations.