Need 50 Articles Written For each Freelancer Category

Hi There, We need 50 original and unique 300 word articles written. The articles will be a short description of 50 of the freelancer.com categories, which can be found on the homepage. The writer must be very fluent in English and a great writer. The articles need to be well structured and be able to flow nicely. All the 300 word articles must be optimized for a particular keyword which will be provided. In order to be considered please choose one of the freelancer.com categories on the homepage and submit a sample 300 word article describing that category. (e.g .Net, Access DB, Active Directory, AJAX etc) Please give your bid for 50 articles.