If you have read the Mac Mojo post, then I don't know what there isn't to understand about the reason why their is no consumer A/V support. Simply put, Windows corporate Messenger uses a new A/V standard and Live Messenger is transitioning to that new A/V stack too. So it's perfectly reasonable for Mac Messenger 7 to also be built using the new A/V stack. The reason why there is no consumer A/V support is because Live Messenger hasn't finished transitioning to the new A/V stack. So in fact, Mac Messenger is ahead of Live Messenger, not behind. And so when Mac Messenger is behind in technology we complain and when it is ahead in technology, we complain more. Admittedly, it'd be nice to have consumer A/V working right now, but it would have been pointless to port over an old A/V stack which is going to be replaced in a few months anyways. Personally, I hope that Mac BU manages to update Mac Messenger quickly to activate A/V functionality once the next version of Live Messenger is released. If there is too much of a delay, then I'd agree they're coasting.