A reverb (or reverberation) is typically used to describe sound--or more specifically the instance where a sound continues despite the original source of the sound being removed. If you apply the same idea to social media, a reverb describes the unique fact that every action in social media is not just done, but is also broadcast across a particular individual's social graph online.
There was a time when age used to matter for marketers. We would buy media based on presumed age ranges of audiences in the hopes that this bit of demographic information would help us reach the right people. In fact, this is one of the most time-honored traditions of marketing planning. It is also one of the dumbest. The thing about age is that it was always used as a proxy for interest.
Many brands like to treat social media like a big party at the cool kid's house. Everybody's invited, and having a great time. The conversation is flowing and it's the place everyone wants to be. Eventually, you realize that your brand is not there yet, and someone (usually someone with a big title) decides that your brand should be. So you put on your best party clothes, show up at the door and loudly announce your arrival.
Last month an unlikely underdog stunned the marketing world at the International Cannes Advertising Festival. At the show, a single marketing campaign took home a Grand Prix award in three categories simultaneously--direct, cyber and PR-- something that had never happened before in the 50+ year history of the show.