9 Charts: Americans and the Social-Networking Sites They Love

Over the past decade, more and more Americans have gone online to find old friends, keep up with family, and share photos, reads, music, and whatever else they come across online. Today, nearly 70 percent of Americans are on a social-networking site of one kind or another, with Facebook as the clear leader among the options.

Week two of our Tech 2020 report looks at this growing feature of the Internet and of our day-to-day lives. Below, we present nine charts looking at which Americans are on these sites and what they're doing there.