Velocity Alert: Rejoice: Facebook gets GIF support. Here's everything you need to know.

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THIS STORY IS ABOUT TO GO VIRAL

Rejoice: Facebook gets GIF support. Here's everything you need to know. Facebook finally has legit GIF support. Here's how it works How does Mashable know what's going viral? Mashable built a system called Velocity, which scours the social web, collecting lots and lots of data around how people are engaging with published articles. It then pulls all of that data back to Mashable, dumps it into our own predictive engine, and predicts which articles are about to go viral. Read more at Mashable.com ▶ Mashable, Inc. is a Delaware Corporation. P.O. Box 64 New York, NY, 10159-0064

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