Discovered: Facebook... for cavemen?

Before Facebook, MySpace, or even Friendster, humans had... rock-etched status updates? Archaeologists from Cambridge are currently analyzing a "prehistoric version of Facebook," which, they argue, is one of the earliest examples of social networking on record. Here, a concise guide:

What is it they're studying, exactly?

Researchers are analyzing thousands of images strangely left on soccer-field-sized rock faces at two archaeological sites in Sweden and Russia. The etchings were found alongside river networks, where Bronze Age tribes would return year after year to add new images of animals, people, boats, hunting scenes, and mythological depictions of centaurs and mermaids. The site gave "different clans the opportunity to build up knowledge and share tips on hunting and other necessities for survival," says Britain's Daily Mail. Some of the earliest artwork dates back 6,000 years.

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How does this constitute social networking?

Archaeologists like Cambridge's Mark Sapwell think the primitive canvases possessed the same fundamental characteristics as a modern day Facebook wall. "People would create art as an open invitation," Sapwell tells PhysOrg. "Like a Facebook status invites comment, the rock art appears very social and invites addition." Over hundreds or even thousands of years, new images were added, evolving dialectically as a sort of early comment system. Tribesman even bestowed their stamps of approval on drawings they appreciated — an instinctive, early form of the "like," says Sapwell.

How did these "status updates" change over time?

The earliest depictions mainly featured animals like elk. As time went on, new ideas began to take shape: Centaurs and other imaginative hybrids, followed by depictions of boats and travel. A few pictographs would eventually appear in "mobile" form as inscriptions on pots and knives, says IT Portal.

Why does this matter?

The social networking comparison, while arguably tenuous, speaks to a basic, fundamental need to communicate. "I think people went [to these places] because they knew people had been there before them," says Sapwell. As Facebook's popularity demonstrates, "people have always wanted to feel connected to each other." These rough, early forms of media served as an "expression of identity for these very early societies."

Sources: The Awl, Daily Mail, IT Portal, Metro, PhysOrg