More interest. How often do you stop and read through an ad you were not looking for before hand? Probably not very often. But most professionals will read through articles about their industry. Without the sales pitch in your article readers will probably keep interested in your ad. Hopefully they will think that you know what you are talking about and click on that link at the bottom of the page.
Ever thought of free stuff as effective website advertisement ideas? Things like pens and t-shirts are very popular and often times are great for using in getting the word out about your site. Everybody loves free stuff and you should be no different, make full use of this and watch the results yourself.