The biggest advertising agency holding WPP spent $1 billion with Facebook and $4 billion with Google in 2015 [1]. Both figures are up compared to 2014, by 56% on FB and by 38% on Google, so the growth of advertising budgets on Facebook was faster, but Google still dominated.<p>What&#x27;s impressive is that WPP alone brings in around 5-6% of both internet giants revenue. I wonder how the few multinational advertising giants (WPP, Omnicom, Publicis etc) compare to a long tail of local agencies and individual advertisers.<p>[1] <a href="http:&#x2F;&#x2F;www.businessinsider.com&#x2F;wpp-google-and-facebook-spend-2015-2016-1" rel="nofollow">http:&#x2F;&#x2F;www.businessinsider.com&#x2F;wpp-google-and-facebook-spend...</a>