From personal experience with my toddler I have seen the truth behind this. My son has been watching Super Why for about two weeks and has started identifying letters everywhere.
Two or more modes of operation. The term is used to refer to myriad functions and conditions in which two or more different methods, processes or forms of delivery are used. On the Web, it refers to asking for something one way and receiving the answer another; for example requesting information via speech and receiving the answer on screen.
an idea, belief or belief system, or pattern of behavior that spreads throughout a culture either vertically by cultural inheritance (as by parents to children) or horizontally by cultural acquisition (as by peers, information media, and entertainment media)
Viral Videos are online videos which gain mass popularity through Internet Sharing, such as entertainment websites, e-mail messages or suggesting a friend watch it