Skype have now released version 5.2 for the Mac which includes some new features.
Group screen sharing
Show presentations, photos and more by sharing your computer screen with everyone on the call. You stay in control of what they see. Available only with a Skype Premium subscription.
Call control bar – with video
Now you don’ t need to switch back to full-screen Skype to carry on a video call. Just minimize Skype and you can still see the person you’re talking to – while you also work on your computer.
[ilink url=”http://www.skype.com/intl/en-gb/get-skype/on-your-computer/macosx/” style=”download”]Download Skype 5.2 for Mac from here[/ilink]