Snapchat just copied the best feature of Instagram stories

It’s been just over three months since Instagram copied Snapchat stories and slapped them on top of its feed. The move appears to be a success: within a few weeks, 100 million people were using the feature every day. (Snapchat’s entire app gets 150 million users a day.) Instagram stories are almost identical to the Snapchat version, but they have an extremely useful extra feature: you can rewind them by tapping on the left side of the story. Well today it’s Snapchat’s tur