1. A contact management interface application for managing and sharing electronic contacts of users of a group, comprising a processor and a computer readable medium having instructions stored thereon, that when executed by the processor cause the processor to generate: electronic contacts of a first user from different external sources shared with all the users of the entire group or with selected users of subgroups within the group wherein all the users of the group have a preexisting connection between each other; an interface configured to download all the electronic contacts shared by the first user from the external sources into the contact management interface application; an interface configured to merge the downloaded electronic contacts from the different external sources shared by the first user in the contact management interface application, wherein the application is configured to display the first user's contacts, gathered and merged by the contact management interface application from all the external sources linked to the first user; a sharing interface configured to share a selected set of the merged electronic contacts of the first user with all the users of the group or among the selected users of the subgroups and place the selected set of the merged electronic contacts of the first user into a common pool of shared contacts of other users of the group of the contact management interface application; a searching interface configured to search for specific contacts from the common pool of contacts based on search criteria entered by the first user and configured to serve as a management interface to permit the first user to manage his specific contacts; and an access interface configured to identify and display connectivity information between the electronic contacts and the users, to all the users of the group and display the external source from which the electronic contact has been received from, in order to facilitate a communication between a user viewing the access interface and the electronic contact through an introduction from the user connected to the contact.