By Ben Fox Rubin Forrester Research also predicts that annual spending on online ads in the US will top $100 billion in 2019, as advertisers follow consumer habits.

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Source:: http://cnet.com.feedsportal.com/c/34938/f/645093/s/4025f618/sc/36/l/0L0Scnet0N0Cnews0Cinternet0Ead0Espending0Eto0Ehit0Eover0E10A0Ab0Eby0E20A190C0Tftag0FCAD590Aa51e/story01.htm