By Sharon Gaudin
Instagram has seen a huge spike in popularity among mobile device users over the past six months, pushing it past Twitter for the first time.
Instagram, which is just two years old, went from 886,000 daily mobile users in March to 4,589,000 in June and 7,302,000 in August, a nearly 8.5-fold increase, according to comScore, an online tracking and analytics firm. Twitter had 6,868,000 daily active mobile users in August, up 24% over the same six month period. comScore said.