If you have already scoured all of the free content sources, such as Goarticles, you may have missed a site called Constant Content. Some articles can be downloaded for free, while others are sold by usage or exclusive license. If they don't already have what you are looking for, they have over 1800 writers who will create an article to fit your specific needs. Sometimes, I get too close to my sites and cannot seem to think of another thing to say about the topic. I would imagine that at least one of those 1800 writers would be able to think of something new to say. The articles I browsed through seemed to be well-written, so it might be worth taking a look at if you are in need of some new content for your site. Check it out at www.constant-content.com.