The "portable" version has all the functionality and fun that you get in the classic Windows Live Messenger, but now with the advantage of being able to take it anywhere.
Windows Live Messenger Portable does not require any installation. With just a mini CD or an USB device (because its executable file weighs just 15MB), you can use the most popular instant messaging service anywhere you want, and in any computer.
The functions are the same as always. With Windows Live Messenger Portable you can chat with friends, and establish conversations with voice or video conferencing. But it has the advantage of multi-session.
With a fun and enjoyable interface, Windows Live Messenger Portable is totally free of advertisements. try out this new experience that Microsoft offers.