Require high quality article introducing a Twitter based start-up

Hello professionals,

We are developers of a web-based gaming app that focuses on trading virtual shares in the 500 most followed people on Twitter.

We can be found http://www.walltweettrader.com and has a theme loosely based upon the stock market. Our focus is upon fun, addictive gameplay as well as displaying the hierarchy and tweets of the most influential people on Twitter.

We require an article written for the purposes of generating expose and backlinking to our app. The article will subsequently submitted to high level article sites like Knol, eHom and Squidoo.

In order for the article to be suitable for submission to these directories it is important that it must not be deemed overly promotional but topical, relevant, informative and of good quality. All content must be original.

The article must contain keywords associated with WallTweetTrader and no more than 3 rel=\'follow\' links.

We are open to suggestions as to the core topic that the article discusses or we can work with the successful applicant to identify a suitable subject.
Article length: 300-500 words

Our target audience:
Intelligent, males, females, between 14-30 years old, interested in social media, games, mobile technology, innovations, trends.

Successful applicant will:
Have experience in professional copy-writing. Understand the principles of SEO, article directory submissions and web-applications.
Have a good grasp of the current trends of social and mobile web applications.

We will provide the successful applicant with further details about the app.

Thank you for your interest and please feel free to ask questions.