According to this article yes... But the thing is, when you sign up for any of this software, you know that it allows logging, MSN for example has the capability to log, regaurdless of if it is default or not, when you chat with someone you know they have the capability to be logging you, because it is built into MSN, even if they don't use Plus! Therefore if someone DOES use Plus!, and it is logging, the person doesn't necessarily know you are using Plus!, but they know you are using MSN, therfore they know that you have the potential to log them, it's like a nonverbal agreement...you just "know" they can log you...This all sounds so stupid
/ 
