I do have 10 articles, each between 450 and 500 words. These articles need to be rewritten so that they won't be noticed as double content by major search engines - some SEO knowledge would be helpful.
General subject for all articles is health.
The articles should have a 4% keyword density (the topic) which includes variations of the keywords.
There must be no copyright. Articles will be exclusive to me and are not to be reused or resold later on.
Articles will be sent by email to the winner.
*** I prefer someone with knowledge on the subject and mother-tongue: english ***