1. A method for permitting exchange of contact information between a plurality of users in a network-based contact management system, comprising: accessing, by a system server and over a network, an electronic communication account associated with a first user of the plurality of users; obtaining, from the first user's electronic communication account, electronic identifier information for at least a second user of the plurality of users; identifying, in a database associated with the system server that stores central contact information for the first user, whether at least a portion of the second user's electronic identifier information is included in the first user's central contact information; identifying predetermined settings set by the first user; if at least the portion of the second user's electronic identifier information is not included in the first user's central contact information, generating, for the second user, a request to exchange contact information with the first user, wherein the request is transmitted according to the first's user's predetermined settings by one of: automatically transmitting the request by the system server to the second user without input from the first user; and transmitting the request by the system server only upon receiving input from the first user; and receiving, from the second user and at the system server, a one-click response to the request to exchange contact information, wherein the one-click response specifies one of the following actions: a delete of the request to exchange contact information with the first user; an exchange only home contact information action with the first user; an exchange only work contact information action with the first user; and an exchange home and work contact information action with the first user and wherein, in the event of an exchange of contact information, the one-click action further specifies information pertaining to whether at least one of phone, email or address are to be exchanged.