The prefered way is to drag and drop applications, not folders. The folder containts a lot of stuff and user asks himself on which one he has to click. Also, usualy the users preferences, logs, etc. should be saved in user folder, not on the directory next the application. It's better, because multiple users can share the same application copy and the preferences/logs/screenshots are keept when you reinstall.
I know it's not finished, then I don't complaint, but it looks like a Windows-like organization (a folder with all the stuff without a real order) with an Mac type installation procedure (drag and drop) and some users get confused.