Millennials, the 80 million people now aged 16 to 34, have buying and brand preferences that in many cases diverge sharply from their parents. But millennials need help from friends and family in making just about any decision, including which restaurant to eat at. They’ll use technology (social and mobile) to gather opinions. Sixty-eight percent won’t make a major decision without running it by their network first. This info from new surveys by Boston Consulting Group.