Many banks (I'm thinking Capital One 360 here) will give you a line of credit at (reasonable) daily interest. Very useful to keep a low balance in your 'transac

Many banks (I'm thinking Capital One 360 here) will give you a line of credit at (reasonable) daily interest. Very useful to keep a low balance in your 'transactional' checking account and let it dip temporarily below zero for a few days at a time, paying a few cents to a dollar in interest for the privilege.