They are probably the most important document in understanding history. Without writing we would have a difficult time understanding archeological data. Also journals give great detail about wars and other major conflicts that would otherwise be unknown to historians.
Old media refers to the mass media institutions that predominated before the information age. These include print media, film studios, music studios, radio broadcasting, advertising and television. The type of social media platform that is most like old media is YOU TUBE: BECAUSE THE USE OF VIDEO MIMICS THE FORMAT OF TELEVISED NEWS BROADCASTS.