I was wondering if it's legal to use google's new referral system with other ad programs like YPN. I know it's not legal to do it with Adsense for Content, but Adsense for Referrals are not contextually based. I have always seen much higher revenue with YPN, but I really like the idea of this new referral system and I can see my revenues increasing greatly if I can use both at the same time. I have emailed Adsense themselves about this but I was hoping for a more immediate answer.
I would wait for an answer and also check to make sure it is ok with YPN. Any answer here would be just be guessing on members part. I say it would be ok but I do not know for sure.