Originally, the cards were visiting cards to announce oneself to the party you wish to see.

FORBES: How Was The Standard Size Of A Credit Card Or A Business Card Established?

The earliest known visiting cards were the same size as the deck of playing cards.

FORBES: How Was The Standard Size Of A Credit Card Or A Business Card Established?

Learn more about Skype Gift Cards by visiting the Skype Shop or our Facebook page.

ENGADGET: Skype launches gift cards, lets parents drop hints to distant kids

With the new changes, merchants can add specials for customers visiting a location for the first time, as well as use new customizable punch cards.

FORBES: Move up http://i.forbesimg.com t Move down