This story was originally published on Marketing Dive. To receive daily news and insights, subscribe to our free daily Marketing Dive newsletter. While marketers have set their sights on figuring out how to engage younger consumers, it can be easy to overlook those who are 50 and older. However, this group boasts $8.3 trillion in collective spending power and represents 180 million Americans.  Through its media network, AARP is able to harness the power of its nearly 38 million members to offer marketers ...