I am talking about the advertising block in the right sidebar (column). We don't pick them -- they are automatically supplied by Google based on the page content. They are pretty much the only thing that pays for the site hosting.
Revenue is less than exciting but I have also seen a change in the ads that appear there. While we used to have more small (primarily text) ads, recently it has been more like one big ad from some relatively big company. At the same time, revenue has dropped.
So, this post is a question. As site users, were you more likely to respond to (click on) the smaller, smaller business ads? Or, put another way, were the small text ads more useful?
I am asking because I could modify the ad options so that only text ads appear in our advertising block rather than the big graphic ones. Most important is what you, as a reader, find useful.