Yeah, well if you're a person who trys out alot of programs, you'll be surprised how many empty folders pop-up, and in different locations, that are hidden. It DOES slow down your computer because it takes time for your computer to process all of the properties of each individual folder.
I was thinking that the empty folders could be scanned, and then you can select the ones that you would never want to see again in the scan.
Plus why should you hang onto junk files?