In economics, the concept of a market is any structure that allows buyers and sellers to exchange any goods, services and information. The exchange of goods or services for money ...
http://en.wikipedia.org/wiki/market

The NASDAQ Stock Market - Official site of The NASDAQ Stock Market featuring free stock quotes, stock exchange prices, stock market news, and online stock trading tools at NASDAQ ...
http://www.nasdaq.com/

A "market economy" is an economy in which individuals make economic decisions according to the principle of supply and demand. A market economy is a realized social system based on ...
http://en.wikipedia.org/wiki/Market_economy

News, market data, portfolios, mutual funds, personal finance, and discussions.
http://www.marketwatch.com/

Whole Foods Market is the world's largest retailer of natural and organic foods, with stores throughout North America and the United Kingdom
http://www.wholefoodsmarket.com/