Facebook at Ten

The little Harvard dorm-room project is all grown up, now a real-life matrix with 1.23 ­billion people worldwide plugged in. It’s only been a decade, but it’s hard to conceive how people ex-stalked, mourned, protested, advertised, planned events, or let their “friends” know which dog breed BuzzFeed says they are most like before Facebook. Here, a look back at all our scrolling, sharing, “liking,” commenting, and “poking.”

Photographs: Justin Sullivan/Getty Images (Zuckerberg); Patrick McMullan (Rihanna); Philippe Lopez/AFP/Getty Images (Mickey Mouse); Scout Tufankjian/Obama for America (Obama)

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Facebook at Ten