1. A method comprising the following computer-executable acts: receiving a document that has a people tag assigned thereto, wherein the people tag comprises first data that is indicative of an identity of a first individual that corresponds to the document, wherein the first data comprises a unique identifier assigned to the first individual by a service, and wherein the people tag is assigned to the document by an assignor; receiving identification authentication data from a second individual; transmitting the identification authentication data to the service; subsequent to transmitting the identification authentication data to the service, receiving contact data from the service pertaining to the second individual, wherein the contact data comprises data that is indicative of identities of contacts of the second individual, and wherein the contact data further comprises the unique identifier assigned to the first individual by the service; accessing the contact data comparing the contact data with the first data, the comparing comprising determining that both the contact data and the first data comprise the unique identifier; and displaying the document on a computer screen in conjunction with text that identifies the first individual to the second individual based at least in part upon determining that both the contact data and the first data comprise the unique identifier, wherein the text indicates a name of the first individual as assigned to the first individual by the second individual.
1. A method comprising the following computer-executable acts: receiving a document that has a people tag assigned thereto, wherein the people tag comprises first data that is indicative of an identity of a first individual that corresponds to the document, wherein the first data comprises a unique identifier assigned to the first individual by a service, and wherein the people tag is assigned to the document by an assignor; receiving identification authentication data from a second individual; transmitting the identification authentication data to the service; subsequent to transmitting the identification authentication data to the service, receiving contact data from the service pertaining to the second individual, wherein the contact data comprises data that is indicative of identities of contacts of the second individual, and wherein the contact data further comprises the unique identifier assigned to the first individual by the service; accessing the contact data comparing the contact data with the first data, the comparing comprising determining that both the contact data and the first data comprise the unique identifier; and displaying the document on a computer screen in conjunction with text that identifies the first individual to the second individual based at least in part upon determining that both the contact data and the first data comprise the unique identifier, wherein the text indicates a name of the first individual as assigned to the first individual by the second individual. 8. The method of claim 1 , wherein the first data comprises a name assigned to the first individual by the assignor, and wherein the contact data comprises the name assigned to the first individual by the second individual, and further comprising: when comparing the contact data with the first data, determining that both the contact data and the first data comprise the name of the first individual; and causing the text to be displayed in conjunction with the graphical item that represents the document based at least in part upon determining that both the contact data and the first data comprise the name of the first individual.