WJHL News Channel 11 - Johnson City, TN - Phone: 1 (423) 926-2151
Television advertisement or television commercial in Johnson City is considered the most effective mass-market advertising format. Advertisement revenue provides a significant portion of the funding for many privately owned television networks. The vast majority consists of brief advertising spots, ranging in length from a few seconds to several minutes. Program-length ones, called infomercials, are used to promote a wide variety of goods, services and ideas. The effect upon the viewing public has been successful and pervasive.