[ QUOTE ]
Is it unethical to team an account?

[/ QUOTE ]

Why would it be? Party doesn't care where they get their rake. It would screw up your notes or database numbers if 2/more people played the same screen name with different styles. I don't feel any moral obligation to maintain the validity of someone else's notes or DB.

One instance that I would consider unethical would be if I had a personal bet with someone about results, leader board position, etc., and had an unknown partner helping me get in a large number of games.