The external links guideline recommends avoiding links to Facebook unless the profile is an official account, "controlled by the subject (organization or individual person) of the Wikipedia article" and when the links to Facebook "provide the reader with unique content and are not prominently linked from other official websites". Wikipedia is not a directory for helping Facebook users find pages on Facebook.
Template:Facebook page displays an external link to a page at Facebook, a social networking website. It is intended for use in the external links section of an article.