While mobile advertising is a tiny slice of the global advertising pie, "its growth is huge.....and exponential" says Anna Bager who heads the IAB's mobile section. The Interactive Advertising Bureay (IAB) is the lead trade organization for digital publishers. In this interview with Beet.TV, she says that mobile advertising the U.S. will pass $1 billion this year, up sharply from the IAB's estimate of $550 - $600 million for 2010. Bager will be hosting the IAB's first industry conference for mobile advertising on Monday (7.18) in New York. Andy Plesser