Vieira farewell on 'Today'

Matt Lauer called it "a very bittersweet Wednesday morning" as he and the rest of the staff and crew on NBC's Today said goodbye to Meredith Vieira.

It was lavish and emotional. There was a touching clip retrospective of Vieira's five years on the show. She was serenaded by Carole King and Jack Black. And there were heartfelt testimonials from coworkers Lauer, Al Roker, Ann Curry (who is replacing Vieira), and Natalie Morales.

The highlight: An extended song-and-sprint which had Vieira

running all over the set to Journey's

"Don't Stop Believin'. " Out on the plaza, she was greeted by a stunningly uncoordinated flash mob of dancers that included Abe Vigoda and Jimmy Fallon. Vieira, 57, says she's leaving the show to spend time

with her family. (We also liked David Letterman's Top Ten explanation a few weeks ago: "Only so many times you can learn secrets to making chilled summer soups.")

Five advantages of trading forex market .

1. 24 Hour Market: Since the forex market is worldwide, trading is continuous as long as there is a market open somewhere in the world. Trading starts when the markets open in Australia on Sunday evening, and ends after markets close in New York on Friday.

2. High Liquidity: Liquidity is the ability of an asset to be converted into cash quickly and without any price discount. In forex this means we can move large amounts of money into and out of foreign currency with minimal price movement.

3. Low Transaction Cost: In forex, typically the cost for a transaction is built into the price. It is called the spread. The spread is the difference between the buying and selling price.

4. Leverage: Forex Brokers allow traders to trade the market using leverage. Leverage is the ability to trade more money on the market than what is actually in the trader's account. If you were to trade at 50:1 leverage, you could trade $50 on the market for every $1 that was in your account. This means you could control a trade of $50,000 using only $1000 of capital.

5. Profit Potential from Rising and Falling Prices: The forex market has no restrictions for directional trading. This means, if you think a currency pair is going to increase in value; you can buy it, or go long. Similarly, if you think it could decrease in value you can sell it, or go short.