I've recently purchased a generic webcam which is mac compatible so I'll be able to have skype chats also on my desktop machine. (Lion 10.7.3)
While apps like iChat/Facetime/PhotoBooth all show the webcam a USB Camera,
Skype 220.127.116.11 also shows it. however clicking on it simply gets a blank screen.
If it wasn't supported on older versions I wouldn't provide such feedback.
However for the test I've downloaded Skype 18.104.22.16894. and on that version it DOES work so something got broken during the way...
Here is the device info.
Vendor ID:0xeb1a (Empia Technology, Inc.)
Speed:Up to 480 Mb/sec
Location ID:0xfd130000 / 5
Current Available (mA):500
Current Required (mA):500