This is not a sure thing but if you want to be included in the Google PPA beta you should try spending $15,000 in AdWords. I have 11 campaigns that I’ve spent a total of over 15k with and then I got the invite. Now that may not be a definite thing, but I’d bet that invites may automatically go out to those that have spent 15k on Google Adwords in the past couple months OR 15k for campaigns that are active.

