Creative content writer and marketing guru needed

I am looking for a creative and professional content writer to populate web site with relevant information. I am building a trading web site that will give people ability to test their trading ideas, therefore I need someone to first write some good promotional text that people see when they come to the web site, also text for other pages. I want to give a high level description of what I am after therefore I really need someone who can go and do all research and then propose a text. This is not a high volume task, therefore unlike other bids you are not required to be typing jedi, it is more intellectual task where you are paid for the quality rather then quantity. I am in the development stage of the project therefore I plan to find suitable candidate and then start working with him/her in 2-3 weeks. To be successfull you need to have knowledge of the stock market and have a passion for promoting, creating something that make people want to buy your products. I will need examples of your previous works as well as description of your background and knowledge of promotions and stock market. Also I will give you a small test to prove your skills. Due to the language requirements I am looking for a native English speaker preferably from US or UK