well then bring back chat.although thats another issue.
She is not talking about chat. She is talking about AIM or MSN. This has been brought up before and for some reason every time someone says "use AIM, MSN, or some other instant messenger program" people always jump to something different such as chat or completely ignore the post it seems. = /
The reason why there is a list of things such as AIM, MSN, Wii, xbox live, and so on is because they know people may want to talk privately so they make it easy to do so. If you want, you can do what I do and leave a comment with my AIM name on it and tell the user to delete it as soon as they add me.