1. A method for associating tags with a person, the method comprising: receiving a communication file; receiving a specification of a tag for the communication file; identifying, by one or more processors, from the communication file contact information for a person associated with the communication file; associating the person with the tag based on the contact information in the communication file and the step of determining the tag for the communication file; and receiving a request to search, based on the tag, for users associated with the tag and in response, based on the association of the person with the tag, displaying the contact information for the person associated with the tag.