Over $1bn of payments were made on Venmo in January 2016

"For the first time in our history, in the month of January, over $1 billion in payments were made on Venmo. That is over two-and-half times what we saw in January 2015, and more than 10x our volume in January 2014. We thought this was a pretty big milestone, so we wanted to share it with you."
~Source:  Venmo blog, 16th February 2016