Image hosting has become particular. Sometimes what LOOKS like an image file is not, it is just a redirection to an image file. Hosts like Photobucket started that crap but other hosts to and also a bunch of webpages.

The majority of browsers are now built to actually read the redirect as the image. Then you see the image as normal. If you use a browser that only see true images as images, you will see "nothing".

For those occasions it can be nice to have a second browser to use to see things you cannot with your favorite browser.