You know that iPhone commercial, where they ask "what’s for lunch?" and then they shake the phone and a random restaurant shows up? MobileCrunch has got a fascinating interview with Urban Spoon co-founder Ethan Lowry, and how that commercial sent them up over 2 million downloads. Pretty inspiring entrepreneurial story. While reading I came across AdMob (the way Urban Spoon makes money) and thought some of our readers might be interested in trying it for their local advertising. Seems to work something like Google Adwords, where you prepay (a minimum of $50).