Content for Site, Blog and articles - Long term

Hello, I’m looking to hire content writer to my websites and for article writing. The main subject of those sites is emoticons/smiley/winks. I will provide you with the different categories you will need to write on. There are a lot of categories and this is a long time relation work -Article title will be provided and you have to produce unique article within the range of 450-500 words with specified keyword. -Article must be original and any copy or spin content is prohibited. I use copyscape for verifying content. -Article must be informative and readable with correct grammar, no fluff words for filling space -You agree that upon sending me articles all rights to the articles will be transfer to me. This means you agree not to sell, reproduce, re-use these articles in any manner. -Failing to adhere any requirements above, article will be request for correction or rejected -I will pay $1 for each articles, and I will start with 30 articles. In case this work will be good I will pay $2 for the next 30 articles and than $2.5 for all future content. -work should be done in a timely manner in less than 10 days. Please supply samples of previous work with your bid Thank you