What's next ?

Dancing Hampsters ???

Bound to happen sooner or later.
Risk of damaging the "image" (pun slightly intended)

AOL Coaxes Google to Try Busier Ads - New York Times

"Users of Google's search engine will soon see something they are not used to on the notoriously spare site: advertising with logos and graphics. And the advertisers will not be limited to America Online, whose talks with Google prompted the change in policy, according to two executives close to the companies' negotiations.

... and ...

The executives close to the talks said that at AOL's request, Google would begin to test various forms of graphical ads, and that it would make the same formats available to other advertisers. Google has started to sell graphical ads for placement on other sites; plans to do so on Google itself were accelerated by the AOL talks, an executive involved in the negotiations said."