PR articles are inserted on special, dedicated websites, or they can be placed on other web themed sites, blogs and Internet magazines. Special sites are mostly free, and variants like blogs or internet magazines are usually financially more expensive options.
PR articles is good to place on PR sites and PR servers with a high shot, so that they are visible and to get to you the way of new visitors. A great and more effective option is to place them on thematic sites or blogs. So many more targeted customers will find their way to them.
The aim is to create such PR articles, for which the reader has no idea that this is a typed text. The reader has the interest to click on the placed link, because he wants to read more about the issue or product.