If I change the format to just feature a "random image of the day" in my sidebar, instead of an entire page dedicated to the multimedia, would this violate the terms? I have read that as long as the ads are not displayed on Pages it should be acceptable, and I see the term "substantial" original content. If my website is 90% original articles and reviews that occasionally feature a picture of the day, or a link to a website that allows viewers to donate to charity or something, is that not acceptable?