When Lion was released, a new feature was added to the finder, making it easy to move files from one place to another. While the Mac has always had the ability to drag and drop files, there are many situations where this method of moving files is not efficient. Because the finder is a single window design, even with the sidebar, dragging and dropping can become a pain if you don’t already have the destination window open.
With this tip you can simply copy the item you want to move in the finder. You can used the edit menu, but simply select the time and press ⌘ C. Using the same finder window simply navigate to the destination folder where you would like to place your item. Instead of pasting it using ⌘ V, also hold down the option key, pressing ⌥ ⌘ V. This will move the file from the original location to the destination. This can be a great time saver!