There is finally a way to cut and paste files and merge folders in Snow Leopard. A new (shareware) Mac menu bar application, called moveAddict, provides this function, so you can use Cmd+X and Cmd+V in the Finder.
First of all, install moveAddict from Kapeli just like any other application. Follow the on-screen instructions and it will place a menu in the upper right System Menus area of the menu bar. You can set the application's preferences from this menu. The application will function in a limited mode until registered.
To move a file:
Mac OS X Hints
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