Just out of curiosity, I checked msn.com today to see if they were still blocking the right click.
They are not.
They are, however, blocking the center wheel button click in FireFox, sort of. Now, when you click with the mouse wheel (if you have one), it gets treated as both an open in new tab AND as a left button click.
The page also looks a lot different in FF too. Actually, better IMO. I really could never stand that stupid blue background.