What If This Isn’t The Year For Mobile Advertising?

Now that we’ve gotten all excited about the potential revenues iAd could reap, and big giants like Google (NSDQ: GOOG) and Apple (NSDQ: AAPL) have acquired start-ups for hundreds of millions of dollars, what happens if mobile advertising doesn’t end up taking off this year — or any other year?

That thought must creep into the minds of industry executives, especially when a guy like Kevin Ryan, the former CEO of online-ad company DoubleClick, tells the WSJ that he is skeptical about the potential of mobile advertising.

Ryan says the small screen sizes and the inability to create much demand to date for mobile ads are bad signs. Despite that evidence, he says he’s learned quickly that