50 Articles 500-Word

I'm looking for a low cost, but phenomenal writer that can write 50 original articles. Each article will be of 500 words, keyword rich about shopping. The article should be able to significantly improve my Website search engine rankings on Google and other search engines. 1. You will post articles in various high ranking sites, press releases, blogs, forums. You must know the right websites where to post these articles that would generate a high ranking for search engine purposes. 2. Articles have to be SEO friendly. 3. Articles have to be focused on Shopping. 4. Articles need to be completely original, and not rewrite of articles obtained from somewhere else. 5. You agree that all the copyright of the article will get transferred to me as soon as you submit an article. 6. You will come up with topics of articles, and I will approve them. After that, you will write articles on those topics.