You know the report, even if you don’t know… you know it. Because every time someone talks about the hours of screen time young people are soaking in today, they are referring to Common Sense Media’s “Media Use” report, which uniquely surveys both tweens (8-12-year-olds) and teens (13-18-year-olds). Here are some of the highlights that leapt out at me as a social researcher and author who writes about this stuff regularly… like their favorite screen activity, how much social media they’re actually soaking in, and how many more kids have smartphones in their back pockets now…