Well, after being around during the last 3 and a half years , I must say that I never downloaded one single "Mac" theme or skin.
I agree with JamMeister33 first post in 100%: "If I wanted a Mac, I'd buy a Mac

"
I see that some authors use to make Mac things in the same away they make XP things and will make Longhorn or whatever be popular in the future, just to get downloads.
I can's see the necessity of WC to care dozens and dozens of theme and skins of the same thing, just changing a few pixels for them to say: "Hey! this is the OSX I created!"....all those mimic themes and skins are nothing more then rips to me, since NOTHING was created by those "authors".
Using a Mac theme on a pc machine, is the same thing as if you have a Ford car, but using all the accessories of a Chevrolet, just to pretend that you have a chevy, because you don't have the $$$ to buy one...this doesn't make any sence to me.
If some of you thinks that I am overdoing, just make a search in the DesktopX, Windowblinds, Winstyles,etc.. sections and you will see what I mean...tons of the same thing, just different names as the "authors"