The Official Star Trek Fan Club is an arm of Paramount Pictures that is designed to give fans of the Science Fiction classic Star Trek an officially sanctioned 'Fan Club'. Members receive a certificate, six editions of the Star Trek Communicator magazine (which has been available at most newsstands and comic stores) and discounts to many venues and memorabilia that is officially licensed by Paramount. However the Star Trek Communicator ceased publication and will be replaced in the foreseeable future (see information at sites below).
References
Official Star Trek Fan Club Wikipedia(Text) CC BY-SA