I require 25 articles of 500 words each. This is is a long term project, so selected person/company will get a lot more work. Articles are health related and should be keyword riched. Density of keywords should be more then 3% in the article. There must be a description of 10-20words at the start of each article. I am willing to pay $4 per article. You must provide at-least 2 samples of your previous work.