There are various clients that advertise with Collegehumor.com because of its high volume of traffic and the visibility of its diverse array of ad units they could potentially purchase. The most high impact of these units are the "skin" that wraps around the website and the "pushdown" which allows the skin to house more content, usually a video, and gets a user's attention by literally "pushing down" the other content on the page.
 

The majority of the time, a client will send leaderboard or billboard ad units or a couple of product shots for a designer to pull assets from in order to build a skin or another unfamiliar unit. These are a few examples of skins and pushdown units built in such a manner.