You have two kinds of trends – Classic trends and Prospective trends:
Observing everyday people in the street, talking with the younger generations, and surfing Youtube are perfect for identifying classic trends.
But if you’re looking for prospective trends, Youtube isn’t the right process because once you go to Youtube it’s already too late; you have to look elsewhere.
Most of the time prospective trends are in technology and, I know it sounds kind of crazy, but I think prospective can also be found in science fiction books.
In the world of emotionally branded presence, it is not quantity that counts but quality. Consumers are so barraged by communications that finding a unique venue for a brand message can sometimes be more powerful than logos plastered everywhere. This is particularly true in large cities where modern computer technology has made the cost of oversized vinyl panels negligible and, therefore, 120-foot advertisements staring down at pedestrians from buildings are a commonplace sight, and advertising clutter from bus stop ads to passing trucks is abundant.