I think I've got the account link sorted now.
I can tell from your comment that you were looking at my site.
There is no hidden gallery. Everything is public, with the exception of the controls in the Guestbook.
Every image file relates to a link on the site. If you go to
http://whozat.tk/ppl/c/f/bec60b0f59c3c8958fc.html (for example) and go to the botom section "Source References" you will see a list of image buttons. These buttons, as you correctly identified, use an external service from Microsoft called "Zoom.It" to display images. Whilst the images are served from the "Zoom.It" site it is a condition of that service that the original image be publicly available on the web. If you mouse over the bottom right corner of an image you should see 4 buttons, the right hand most of which is "Toggle full page". If you select this then again in the bottom right corner you will see a link called "View original". Whenever possible I have linked to an original at another host (on the example page those numbered 2 to 13 inclusive). However sometimes, like in number 1 on this page, I need to host the image. In the case of the number 1 link (to
http://zoom.it/42HY) the original image is
http://whozat.tk/downloads/fmp/B/492141021.jpg. If I remove the image the link will cease to work when the image drops out of cache on the "Zoom.It" server (as it is an image presentation service and not an image storage site). I wouldn't have thought this was an issue if these files were being displayed directly rather than through "Zoom.It", and indeed would have thought it an advantage as any load of image files being viewed falls on the "Zoom.It" server(s) rather than yours.
I can't think of any easy way to prove "en masse" that the files under tree/downloads and tree/scans are related like this, but I can show they are individually being presented through "Zoom.It". If file
http://whozat.tk/x.jpg is being questioned going to
http://zoom.it/?url=http://whozat.tk/x.jpg will load the image and display the "Zoom.It" URL. If the reviewer would like to give me a list of randomly picked image files I would be able to provide the pages to which they are linked through presentation by "Zoom.It".
Every image is directly necessary to the site. If the reviewer would like to know how in any particular case(s) I will provide details.