No Cash, No Checks, No Problem Peer-to-peer payment apps are one of the newest ways to send money. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Saving for College 101 Here’s a crash course on saving for college. How Big is Money? Learn a little about worldwide currency in this fun infographic What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month.