eMarketer has published a couple of eye-popping charts about the size of Amazon's ad business. The first estimates Amazon made $610 million in ad revenue last year:
Note that Amazon is on track to make $835 million this year.
Here's the U.S.-only breakout:
Looks like Amazon will cross the $1 billion threshold globally sometime in 2014.
Amazon only recently launched an ad exchange and a mobile ad network.
SEE ALSO: Amazon's New Ad Network May Already Be Making $500 Million In Sales
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