"Welcome! You're signed in to Google Accounts under the email [your email address] and your Google Account password, but this is not a valid AdSense login."
The changes to referrals promoting AdSense will now depend on where your users are located, regardless of your location as a publisher. You'll earn $100 for every user you refer to AdSense who is located in North America, Latin America or Japan when they generate $100 in AdSense revenue within 180 days and they remove all payment holds. You'll no longer be paid for users you refer who are located elsewhere. These changes will go into effect the last week of January.