Amazon’s (NASDAQ:AMZN) ad business has gained a lot of attention over the last couple of years as it has gone from practically inconsequential to a $10 billion segment. But investors eyeing the “Other” revenue line in the online retailer’s recent first-quarter earnings report may be disappointed with the 36% growth (on a neutral-foreign-exchange-rate basis) when compared to growth of 132% in the first three months of last year.

Granted, Amazon’s advertising growth numbers were artificially inflated last year by an accounting change. Even factoring in those changes, though, Amazon’s growth rate was cut in half.

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