There should be a hack to show various notifications (like twitter search,facebook notifications, friend requests etc) at one place in the order of their appearance. There is already a hack for twitter search notifications (http://developer.yahoo.net/forum/index.php?showtopic=441) . If we can get all the notifications at one place on the desktop , it would be very helpful.
A couple of times you have multiple pages open in different tabs and u tend to miss on the notifications . This feature would be pretty helpful and we can reuse a apart of the JS script written by Uday.