1989 27 Sept. 31/2 The staff almost unanimously voted with their feet as long waiting lists developed for use of the Macintoshes... ‘It's viral marketing. You get one or two in and they spread throughout the company.’
2001 F. Popcorn & A. Hanft 259 Another kind of viral marketing is when an application is so cool—a game, for example—that you can't resist emailing it to your entire address book.