Excerpted from the article intro:
"This detailed description can provide your inbound marketing team with a clear vision of its target customers.
In the practice of traditional marketing, this target audience was commonly reached by deciding what TV shows they watched to determine where to place TV advertisement, figuring out what kind of music they listened to determine which radio stations to focus radio commercials, and knowing what they enjoyed reading so print ads were published in the right newspapers or magazines.
... three distinct differences between how marketers used to reach their target audiences, and how they must reach them today."