Venmo started out in 2009 as a way for founders Andrew Kortina and Iqram Magdon-Ismail to pay each other without having to exchange cash or write a cheque. The first prototype worked over SMS, Andrew and Iqram would send notes alongside the cash to keep track of payments. While SMS functionality died with the app launch in late 2010, the social element of Venmo remains one of the app’s core features. In early demos, Venmo founders proposed it as a way for musicians to sell songs and merchan...