I've just recently started but it's going along pretty well. Some articles require a frequency of a certain word or phrase, which is supposed to help for SEO google analytics, but, this can be challenging if you want to use them and write professionally. I've come across (without naming the actual product directly) an article that required me to write "Tylenol buy" three times. Not "buy Tylenol," which would be much easier to implement. So I had to figure out how to squeeze that in with some lame line like: "Make sure to check out the generic brands if you want to save money when you Tylenol buy."
So my advice is to be picky with your articles and save some face.