No More Skinning........

......of XP? I'm trying to figure out if it is really worth me making skins for XP anymore, well, adding a substyle anyway.

When it was XP and Vista it was fine. Usually I created my skin as an XP skin then added a substyle and added the extras for Vista but now we have Windows 7. It would mean creating the XP skin, adding a substyle for vista and then adding a substyle from Vista to do 7 stuff. Skinning for 3 Operating Systems, each with different layouts is quite a long task.

Has 7 been so big a hit that most who didn't bother with Vista and stayed on XP, now went too 7? Themes I create will work on XP but they won't be specifically made and everything might not be skinned. XP was bound to fade out sooner or later but how many people still use it?