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Google Extends Opt-Out Policy To CPA Testing

Google's still testing the waters of its cost-per-action ad model, which charges advertisers only when a sale is made or a lead form is filled out. But as one publisher notes, the AdSense team is inserting CPA ads onto his blog, whether he wants them there or not.

Cost-Per-Action Done Right

To read most of the articles on Google’s expanded test of CPA-based content ads, you would think it was the greatest invention since the wheel.  It could be great for certain advertisers, but only if they do it right.  As it turns out, that’s not so easy.