Best of 2007: Articles and Blog Posts on SEM
WebMarketCentral
JANUARY 22, 2008
PPC Outsource or In-House? RIP, PPC by ClickZ Author Gary Stein argues that click fraud, the rise of alternative online media, and CPA models will cause pay-per-click (PPC) advertising models, "the bright star of the online advertising universe.to fade a bit."
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