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 Historical Inflation This calculator shows how inflation over the years has impacted purchasing power.