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Parker states: "On the Internet, users are increasingly demanding, direct online contact with sources of information networks and other users in a dynamic context exceeding constraints of geographic space, time, size and extension that have characterized access to information services operated within the physical boundaries of the libraries and traditional documentation. The information producers and intermediaries in the world made a real race to offer more efficient options for dissemination. interaction and navigation in the most various sources with a view to responding to requests for information from the most diverse communities of users. "

reference service or consultation has submitted a change process, this in order to seek satisfaction with the information needs of the community, and that the reference is in the ability to use, and make available not only documents the library has all the resources available but also in electronic and digital.

The use of technology has created users higher level of technological literacy, therefore the needs and interests have changed in the same way, the tools for finding information on the Internet, as the source found on the network, allows for an added value, for example, hyper documents reference, containing a list of Internet information resources, located, evaluated, described and compiled by a librarian, reference librarian, for one or more persons with a common profile.

CONCEPT: according to American Library Association (ALA) a virtual reference service requested by a user to a reference librarian through a computer or other Internet technology, some of communication channels that can be used: videoconferencing, voice over the Internet, email, instant messaging and mobile Internet devices. It is typically used by the Reference phone, fax or email for tracking and responding to requests.

BIBLIOGRAPHY: PARKER

, AL. The LIBRARY Virtual Health for Latin America and the Caribbean. In: Liaison, V.10, No. .3, 1999.p. 2-5

ORDOÑEZ ARIAS, Jose de Jesus. In: Libraries and information technology: Virtual Reference: a new challenge. Vol.3, No. 4 (Oct. - Dec. 2006): p. 18-26.