Twitter grew rapidly from 8 employees in 2009 to over 400 in 2011, and currently has around 110 million monthly active users. Instagram has 500 million monthly active users, with 59% using it daily, and is projected to surpass Google and Twitter in US mobile ad revenues by 2017. Facebook has over 1.59 billion users, introduced 360-degree videos, and has a feature where posts can be translated into "pirate" language.