In its function as a medium of exchange, medium of payment and store of value, gold is thus, in a sense, a timeless classic.

FORBES: Signs Of The Gold Standard Are Emerging From Germany

Although more complicated to use than Napster, they perform the same function of allowing people to exchange music and other files with each other over the internet.

BBC: You are in: Business

Suffice it to say, our relationship with privacy has changed as a function of the benefits we can receive in exchange for that privacy.

FORBES: Google Is Very Creepy, And That's What Makes It So Awesome

Have you ever handed out your business card at a business mixer or other business related function and initiated a successful business relationship after the exchange of cards?

FORBES: Business Networking That Works . . . It's Called Quid Pro Quo

This international conference will gather various experts, history museums directors, curators and historians across the region and beyond, so as to hold a comparative exchange of views on the role and function of prominent History Museums today.

UNESCO: Detailview | United Nations Educational, Scientific and Cultural Organization

And for those who follow the global markets, Girard-Perregaux's watch provides a financial function that keeps track of opening and closing times on the stock exchange in New York, London, Hong Kong and Tokyo.

WSJ: World-Time Keeping Wristwatches

The exchange's function as a securities marketplace fits this definition, but what of its duty as a self-regulatory organization (SRO) to regulate its members and listed companies?

FORBES: Spitzer Shooting At Lame Ducks

According to Bitcoin-Central, it's the first exchange of the digital currency to be licensed to operate as a bank and function within the framework of European regulations.

ENGADGET: Bitcoin-Central becomes first Bitcoin exchange licensed to operate like a bank