Winks: Express yourself with impact. Send animations with sound to really get some attention.
Nudge: Get the conversation going. Give your friends a Nudge.
Drag and Drop Backgrounds: See an image you like? Drag it to your MSN Messenger window to set it as your background.
Set Status Before Logon: See who's online before others know you've logged in by setting your status! Subsequent logons can start you up in stealth mode.
Message History: Pick up where you left off. Enable Message History to track and show your most recent conversations so you won’t be caught off guard.
Contact Cards: Your new online ID card. Easily share contact information and personalize with images and backgrounds.
Works Great with MSN Spaces: Preview a Space from Contact cards with a direct link to view photos, blogs and more. You can even see what music they are listening to. Every time a Space is updated, your Messenger contacts will “gleam” to notify you of the change.
Send Feedback: Tell us what you think. Send the MSN Messenger team feedback right from the MSN Messenger Help menu.
There is a patch at mess.be that will add a check box to the tab options to turn them off. Microsoft says that the final release of Messenger 7.0 will include the option to turn them off.