Vine, which was acquired by Twitter almost a year ago, has hit 40 million users. The company announced this milestone via a tweet earlier today. I was initially skeptic when Vine launched in January this year, but the app (which allows you to make six second videos) has genuinely emerged as a new kind of video art form and has even created its own set of Vine video stars.

https://twitter.com/vineapp/status/369911739782946816