Here's what they say:
"Real" means it's there and you can see it
"Imaginary" means it's not there and you can't see it
"Transparent" means it's there and you can't see it
"Virtual" means it's not there, but you can see it
These galleries are virtual. They aren't here, but you can see them. What I've done, is given Sharon the Web Searching Valkyrie a list of possible places to search. Out of that, she makes a list of links, and each list is a Virtual Gallery. She checks that list periodically, and so it can change at any time. The date on each Virtual gallery is the date that I updated the list for Sharon to check. If the pictures on the pages change, the Gallery will change, but not the date below.
As you can see, the Virtual Galleries are currently just at the pilot stage. Comments are welcomed.