Google ads are beginning to appear more and more in various iPhone and iTouch applications.

The restaurant review app Urbanspoon has already been testing out Google ads to see how they look, how users react and how many hits they will actually get. 

Google AdSense ads will begin making their way to more free applications as time wears on, will this encourage you to purchase more of your Apple apps instead of free-loading?  Do you feel that the ads ruin the clean design of Urbanspoon?