You use COBOL all the time.

Standard

COBOL is everywhere. Since 1959. Everywhere.

Most impressive perhaps, is that 200 times as many COBOL transactions take place each day than Google searches – a figure which puts the influence of Web 2.0 into stark perspective.

Every year, COBOL systems are responsible for transporting up to 72,000 shipping containers, caring for 60 million patients, processing 80% of point-of-sales transactions and connecting 500 million mobile phone users. COBOL manages our train timetables, air traffic control systems, holiday bookings and supermarket stock controls.

via COBOL – Still doing the business | CIO – Blogs and Discussion [h/t Coding Horror].