1998 was the year in which Steve Jobs said, "It's really hard to design products by focus groups. A lot of times, people don't know what they want until you show it to them."

In a time filled with so much uncertainty, one thing seems to be a definite: America's ethnic culture is changing. Naturally, this means that America's teenagers are changing along with it. With one of the most desirable audiences for marketers becoming more and more ethnically diverse, it's important to reach out to as many teens as possible. Multicultural marketing is imperative for the current generation. Yet, at the same time, marketers have to be careful when toeing the fine line that is appealing to all people while trying not to fragment groups based on stereotype. Here are a few tips …

Teachers and marketers face a host of challenges in reaching and connecting with teens. There are the budgetary challenges, and the challenges posed by all-too-smart smartphones. There is one reality, however, that poses a challenge bigger than both of those combined -- and it has marketers joining the "Pay attention!" chorus.

As marketers, we know that even small changes to any user experience can have a dramatic impact on how engaged consumers are in our social-digital ecosystems. Teens are the most sensitive, savvy and fickle to these changes -- and lack the years of entrenchment in any one social network to keep them from jumping ship and trying something new. So what do teens think about the most recent changes on Facebook?