A computationally implemented method includes, but is not limited to: acquiring inference data indicative of an inferred mental state of an authoring user in connection with at least a particular item of an electronic message, acquiring source identity data providing one or more identities of one or more sources that is or are basis, at least in part, for the inference data indicative of the inferred mental state of the authoring user, associating the inference data indicative of the inferred mental state of the authoring user with the particular item; and associating the source identity data providing one or more identities of the one or more sources with the particular item. In addition to the foregoing, other method aspects are described in the claims, drawings, and text forming a part of the present disclosure.