GET IT HERE
Its in beta stage but its pretty cool.
Quite a few people using this leaked beta version.
nudge alerts all of the people in your conversation by emitting a sound and shaking the MSN Messenger window.
In the conversation window, click the Nudge button.
Note
Nudging too often can be annoying. A timer limits the number of nudges you can send in a given amount of time.
I'll be blocking that though
Col