A spinal fixation and fusion device that includes a housing with leading deep surface conforming to the posterior aspect of the intervertebral disk and trailing outer surface conforming to the anterior surface of the disk, weight bearing sides and the top and bottom surfaces with plurality of openings enabling ingrowths of bone. A system may implement a web services interface, a number of storage nodes and a coordinator. The program-schedule-generating device specifies a subject user, who is an information provider to which program schedule data is to be transmitted, and specifies another information provider having a predetermined association with the user.