400 million active users 15% increase internationally 400 million users Instagram Instagram's 400 million hit 400 million users According to CNBC more than 400 million users 400 million users more users than Twitter 300 million 400 million monthly active users 400 million monthly active users 400 million increased ten-fold to 400 million 400 million monthly active users 400 million users 400 million auf 400 Millionen 400 million they surpassed 400 million users more users than Twitter more than 400 million more users than Twitter $600 million this year more users than Twitter 400 million popular 400 million monthly active users more users than Twitter more than 400 million users 400 million active users Instagram recently overtook Twitter Instagram has crossed 400 million active users 15% increase 400 million users 400 million Instagram has more than 400 million monthly active users more users than Twitter 400 million users Instagram has about 400 million users over 400 million montly active users more users than Twitter Instagram more users than Twitter report by CNN 400 million 400 million ad revenue predicted to increase by 146% 400 million users 400 million active users Instagram 400 million users набрал 400million active users in 2015 набрал 400 million users hitting 400 million users 400 million they surpassed 400 million users more users than Twitter Instagram 400 million users 400 million users Instagram Instagram more users than Twitter 400 million monthly active users 400 million active users in September 400 million Instagram is outperforming Twitter Instagram beat out Twitter this year 400 million users 400 million Instagram 400 million active users in September