This is a good move in my oppinoin. With the looks of what is in store with aim triton
http://www.aim.com/triton/demo.html and google's latest foray into the software market "Google Talk" this is a good move on MSN and Yahoo's part to round up their number 2 and 3 spot in the im members percentege world before Aim tries to take it back over and Google tries to get its more up and comming younger fans over into the IM world. As, a fan of both the Yahoo brand and MSN brand I can't wait to see this happen.