Thought out end-to-end to improve and enhance your instant messaging
experience without getting in your way, Messenger Plus! adds lots of
capabilities to Windows Live Messenger. The new features can be
accessed easily from the various Plus! menus and buttons you'll find
added to all the main Messenger windows.Enhance your conversations
with better organisation and more fun. Some of the new features
include Tabbed chats, custom sounds, colors formatting and commands
and quick texts among various capabilities.

For more on this subject check out this cool site www.msgpluslive.net