There are moments when we've all probably felt overwhelmed by advertising - it's not just on TV and the radio, it's on buses, taxis, the sidewalk, the sides of buildings, the NAMES of buildings - kinda makes you want to go lie in the grass and just stare at the clouds. But what happens when even the clouds become advertising? Francisco Guerra is the inventor of Flogos - a new advertising system to reach consumers via the clouds - and he speaks with Faith Salie on Fair Game.

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