Say you have a couple of photos. maybe about 20 photos, you want to move to another folder that maybe more descriptive then the one they are currently in (downloading photos from a camera put them in nondescript folders) Instead of clicking on each file to select it and then cut it or copy the files you simply click in the folder hold down the left mouse button and move the mouse pointer in a loop around the files. One click instead of 20. Once the files are selected you can choose weather you want to cut or copy them to the other folder. You can also drag and drop the file to the other folder as well.
Most of the time when I'm dealing with multiple files doing the same operation I lasso them it is just easier for me and I think simpler.
Wouldn't it be a lot easier to rename the folder than to move a bunch of files ?