It’s been a memorable year in social media. 2015 saw the birth of live social streaming, with apps like Periscope and Meerkat winning over early adopters. Snapchat fully shed its reputation as a niche network and now counts more than 200 million active users. Meanwhile, video dominated social headlines, with Facebook users now logging an estimated 8 billion video views a day (even more than on YouTube, by some counts).

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