The United States spent 121 billion minutes on social media sites in July 2012 alone, according to Nielsen's annual Social Media report. That's 388 minutes — or 6-1/2 hours — per person (if every person in the U.S. used social media). All together, that's 230,060 years we spent staring into the glaring screen of so-called sharing, instead of going outside and playing with our friends, like we're supposed to do in July!

Hearing the hard numbers on all that valuable time seemingly wasted, you may find your fist shaking impotently in the air, while shouting "ZUCKERBERG!!!!" But take a deep breath. We didn't spend all our social media time on Facebook, Nielsen explains, Just most of it.