Who is buying ten-cents-per-impression ads? $0.10 CPM sure, but $0.10 CPI? | Hacker News

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stickfigure on June 29, 2015 | parent | context | favorite | on: Alleged $7.5B fraud in online advertising

Who is buying ten-cents-per-impression ads? $0.10 CPM sure, but $0.10 CPI?

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