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 Question Thank you! Oops! Related Contents The Cost of Procrastination Procrastination can be costly. When you get a late start, it may be difficult to make up for lost time. How Big is Money? Learn a little about worldwide currency in this fun infographic Doubling Your Money This calculator demonstrates the power of compound interest.