50 Articles needed

I need 10 articles writing on each of the topics below, so this will make it 50 articles in total. These articles are for the blog area of my site and the topics are.... E-Business Eco friendly businesses IT Marketing and PR Women in business Each article needs to be at least 600 words long and 100% original, as each article will be checked through copyscape. You are free to chose what you would like to write about on each of these topics, as there is a very wide range of information on each one, but it must be interesting to read and worthwhile, it must be filled with facts and useful information and should have a catching title. Each article must be researched well before being written and you must only bid if you are extremely fluent in the English language, and the use of perfect grammar, and spelling is essential. Payments will be made through paypal. After bidding could I ask you to please send me some examples of your previous work. Thank you.