Comments on: CPA, CPC, CPL, CPM – What works best for me

Comments on: CPA, CPC, CPL, CPM – What works best for me - an online advertiser http://blog.contextweb.com/advisors/cpa-cpc-cpl-cpm-%e2%80%93-what-works-best-for-me-an-online-advertiser Advertising Blog about Online Ad Networks, Publishers and Advertisers Wed, 07 Jan 2009 01:28:45 +0000 http://wordpress.org/?v=2.3.1