Privacy Issue: Windows and public library of photos...what is this?

I got online today to retrieve one of my jpegs. I noticed something that I had not noticed before. It said, “You are storing your photos in two LIBRARIES…” And I thought, “What?” And it then said that there was a “default” storage library and a “public library” where my photos/jpegs were being stored.

What does this mean? I never authorized anyone to make my jpegs/photos public. And it is marked “public photos”. I am afraid to open the file because I don’t want the photos to be downloaded onto that (if it is empty). What can I do to stop this? Or to simply get rid of any public files (which I never authorized.)

Argh. Any information on this? I got this new computer a few months ago….and I know that this was not on Vista (this is Windows 7.)

Thanks for your help.