Don Graham: Post Facebook App Has 21 Million Users, Is “A Substantial Change in Our Demographics”

The WaPo Labs’-created Facebook app, Washington Post Social Reader, is showing results, according to CEO Don Graham.
21 million people have signed up for the app, and more than 75 percent of those users are under 35.
“It represents a substantial change in our demographics,” Graham writes in a post on Quora, a Yahoo Answers-like site. 60 percent of the users are women, and around 50 percent are international readers.
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So Don Graham has a Quora account! More on that shortly.
Via Ask the Post