I have two google accounts, one for admob and adsense, the other one is my google play account. I did that because i was having problems to create the google play account in the first account, i linked the google checkout(2nd account) with the publisher id of the adsense(1st account).
I heard that the checkout cant pay for an adsense in another account, btw my payee name is wrong(without the last character) and i cant change it cuz i live in Brazil(they say that i have to delete and create another account to change it). Im afraid of deleting this account and cant change the publisher id in the market to link it to the new account.
Sorry for the bad english