I just got this notice in my AdWords account.

 
(click to see full)

What the heck is Google Pay Per Action (PPA also sometimes called CPA – Cost Per Action)?  It is advertising that only charging when a specific action is taken.  This is the FIRST beta that I’ve seen.  I am working through the specifics and will be posting more soon!  This post is just more of an FYI that the Google PPA is in Beta.