31. The non-transitory computer readable storage medium of claim 25 , wherein the authorship identifier includes an email link to an email address for a purported author of or contributor to the first document, and wherein the email address is an email address in the first domain and the email link includes a predefined authorship attribute.
25. A non-transitory computer readable storage medium storing at least one program configured for execution by at least one processor of a computer system, the at least one program comprising instructions to: conditionally confirm entity authorship of a first document hosted on a first website of a first domain, the first document including an authorship identifier associated with the domain and unique to the entity but not the first document when: (i) a profile for the entity is associated with the first domain and with the authorship identifier, and (ii) the profile for the entity includes a confirmation status indicates that the entity has confirmed that the authorship identifier is included in documents authored by the entity that are hosted on the first website of the first domain; responsive to confirming authorship of the first document by the entity, permit application of a confirmed authorship process to the first document; and responsive to failing to confirm authorship of the first document by the entity, bar application of the confirmed authorship process to the first document.