Controversial Advertising Campaign

E-mail advertising is another recent phenomenon. Unsolicited bulk E-mail advertising is known as "e-mail spam". Spam has been a problem for email users for many years.
Some companies have proposed placing messages or corporate logos on the side of booster rockets and the International Space Station. Controversy exists on the effectiveness of subliminal advertising (mind control), and the pervasiveness of mass messages (propaganda).
Unpaid advertising (also called "publicity advertising"), can provide good exposure at minimal cost. Personal recommendations ("bring a friend", "sell it"), spreading buzz, or achieving the feat of equating a brand with a common noun (in the United States, "Xerox" = "photocopier", "Kleenex" = tissue, "Vaseline" = petroleum jelly, "Hoover" = vacuum cleaner, "Nintendo" (often used by those exposed to many video games) = video games, and "Band-Aid" = adhesive bandage) — these can be seen as the pinnacle of any advertising campaign. However, some companies oppose the use of their brand name to label an object. Equating a brand with a common noun also risks turning that brand into a genericized trademark - turning it into a generic term which means that its legal protection as a trademark is lost.
As the mobile phone became a new mass media in 1998 when the first paid downloadable content appeared on mobile phones in Finland, it was only a matter of time until mobile advertising followed, also first launched in Finland in 2000. By 2007 the value of mobile advertising had reached $2.2 billion and providers such as Admob delivered billions of mobile ads.