I hadn't really ever used Skype for Mac, but I read many, many posts when the latest version came out slamming it for its terrible interface and design.
Now that I've actually needed to download it and use for the past few weeks, I can definitely sign my name to the list of people who absolutely hate it.
For example, when I click the button to pop out the contact list, it appears in a shadowed panel which is meant for toolsets typically and certainly not a window you'd keep around and use.
Also, when you click on it to appear, it just pops up. When you click the same button, it disappears. However, when you click the X on the window to make it disappear, it does a genie effect into the location of the X (shrinking and sliding into oblivion.) Why the difference? Why wouldn't it genie out, for starters, if it's genie-ing in, and why wouldn't it do this for clicking the button in addition to clicking the X?
It's things like that that drive me nuts in user interface design. It gives a disconnected experience and feels lazy by the creators.
Also, and this really irks me, the menu bar icon is colored and lacking an option to make it black. That's Mac app designer 101. Every other icon up there is black (which is the default color, used by the OS), and every other app that exists as a menu bar app is black, or at least is smart enough to offer a black option (like what Dropbox, Time Sink, etc., does.) I simply disabled the menu bar access entirely because it annoyed me too much.
