Google has expanded the scope of their Pay-Per-Action (PPA) pricing model for AdWords, launching a global beta in some 24 languages, according to MediaPost.
The Google Pay-Per-Action beta kicked off in March 2007.
Now advertisers who have enabled conversion tracking, and received more than 500 conversions from their existing campaigns in the past month will be automatically added to the beta on a rolling basis.
Functionality to create PPA campaigns will be integrated into the AdWords accounts of qualified advertisers.
More details at http://services.google.com/payperaction/.