Google is going to do a migration of old Adsense account. Old account holders will be asked to upgrade their account to a Google Account. The migration test is ongoing at the moment before it’s done full blown. The next time you login to your Adsense account, you might be greeting with the following screen, asking you to upgrade you your login to a “Google Account”.

This is very much like the Blogger Account upgrade last time. Nevertheless, please take note that this migration is only applicable to older Adsense account, so you might not see the screen.

Click here to read more.