Economics

Yahoo Directory of Economists - Biographies of famous economists.
New York Stock Exchange - The NYSE is by far the world's largest market and includes a broad spectrum of market participants, including listed companies, individual investors, institutional investors and member firms.
Virtual Stock Exchange
- They will give you $100,000 of pretend money to trade stocks listed on the US Stock Exchanges and keep track of your portfolio and rank you against the other players.
Yahoo Finance
- Great site for information on stocks.