Produce 500 word articles about Latin America business issues

I am looking for someone to write a weekly article to be placed on our website. This weekly blog article should be around 500 words in length and will appear on the website to be found at www.latinamericastrategy.com I am looking for someone to write a weekly blog article that can be posted onto the site. This article should be an original article about a business or political issue affecting either South America or Central America. It can be country focused (different country for each article ideally) or sector focused (hot sectors are Technology, Energy, Infrastructure and Natural Resources). It should be an article that is good from an SEO perspective and attracts people who are searching for the key terms that we can discuss before the project starts. For £150, I am looking to someone to write one 500 word article for the next 15 weeks.