If you use Yahoo! Messenger, you probably noticed that you can only open an e-mail account at a time. This turns out to be very uncomfortable and limits your possibilities. Anyhow, now you count on Yahoo Multi Messenger , a complement with which you will be able to execute several sessions of the popular instant messaging service at the same time. Although it is new, the multi-session feature is very useful for users who share the same computer, since it allows keeping two or more completely independent sessions opened simultaneously. To do so, you will have to do a double-click on the icon of the program every time you want to open an additional session