If you log in to any of these account you lose your anonymity. If you log in to any account, you are telling them who you are. Tor can not protect your anonymity if you are advertising who you are to the world. You can log in, but you are no longer anonymous. If you log in, the only thing Tor can do for you is to hide where you are located at, but if you tell them even where you are located at somehow, then Tor can not do anything for you. Remember first you have to do something for yourself (for example not logging in) before you can ask Tor to do something for you.