Windows Photo Gallery is not making additional copies of your photos. There
is only one copy--in the Pictures folder, or wherever the picture was stored
originally. Every other instance is just a different way to view, or "pivot"
the information. The Recently Imported link, for example, just shows you
pictures you've recently added to the computer. It isn't a a folder called
Recently Imported. Likewise, the tags are a way to filter your photos
according to a custom keyword to find and organize your photos more easily.
Note that if you delete a photo in Photo Gallery, it's GONE--there isn't
another copy somewhere on your PC. This help topic:
says this about that subject:
Photo Gallery is another way to view and organize your pictures and videos.
It displays pictures and videos that you've stored in Pictures and in other
folders on your computer. It is not a replacement for folders on your
computer. As a result, you should not delete the pictures in Photo Gallery
or the Pictures folder unless you actually intend to delete the pictures
from your computer. If you do, they will deleted from your computer and no
longer appear in either the Pictures folder or in Photo Gallery.
I hope that helps.
Windows User Assistance team