Professionally written articles on the latest SEO techniques

Looking for 1 very high quality professionally written easily digestible article on the subject of SEO per week. The price is per article and it is regular work for an experienced writer who takes high level interest in SEO and writing about the subject. The information must purely be based on fact and not perceived facts and designed to help novices, intermediaries and experts. I want people to read the articles and forward them on because the content is so good.