EXCL: Google-Facebook online ad duopoly stoking second dotcom bubble: Simon Ryan http://www.theaustralian.com.au/business/media/dentsu-aegis-boss-facebookgoogle-duopoly-threatens-meltdown/news-story/585bb5a7951ea31c9ff20f179b039d26 …pic.twitter.com/fV5w4KHgvB
3:26 PM - 18 Sep 2016
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