According to today's panel, the tactics are also most highly affective when applied to teens.
Teens are into promotional hot buttons.
If you can be where they are and give them something for free that provides value to them, they'll become the word of mouth that spreads you around. You also have to find alternative ways to get to them. Recently, for example, Nirve developed a presentation for popular punk band Blink 182. But when you use a tactic like that it also allows you to extend the list, because teens will naturally want to share the right message with all their friends. Pennel points to a recent campaign for popular boy band N'Sync.