Thanks for all the feedback everyone and thanks for your patience!
We don't reply to everything on this forum partly so that a discussion can occur between users - we we do pay attention and are listening.
Just to make things clear, Skype is not giving up on Mac - not at all. The truth is that lots of people at Skype love Macs and are buying them for home and even switching for work - and they ALL want video, just like the people on this forum.
In terms of the question of fairness, we definitely put more resources per Mac user than we do for per Windows user, but Mac users are great customers, so we are happy to do it.
In terms of releasing features on Mac and Windows at the same time, this is a good goal for us, but not always what can happen. In some cases its much more efficient for us to develop features on one platform and then bring to others. Hopefully we will not keep you waiting too long...