The DrumAmazon Increases Ad Market Share at Expense of Google, FacebookBloombergAmazon.com Inc.'s advertising business is gaining faster than expected in a market dominated by Facebook Inc. and Google. The world's biggest online retailer will generate $4.61 billion in U.S. ad sales this year, which represents 4.2 percent of the ...Amazon share of digital advertising market on the riseThe Punchall 7 news articles »