If you’re a journalist (and especially if you’re a political journalist), a new stat worth knowing about social media usage came out a couple days after last week’s piece on “The Twitter Narrative,” a look at who is on and uses Twitter.

According to the Pew Internet and American Life Project’s “Social Media and Political Engagement” report, just 28 percent of American social media users have “used the tools to post political stories or articles for others to read.”

Interesting on its own, but better with context. What’s the percentage of “social media users” in America? According to Pew’s report, it’s 60 percent who use “social networking sites” (categorized as Facebook, LinkedIn or Google+)  and/or uses Twitter. In other words, it’s 28 percent of only 60 percent of Americans who are the ones sharing the political links you see during your daily reporting activities. Doing the math, that’s under 17 percent who are social media-sharing the political links you eat and breathe.

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