This is the issue with all sites of Nulled's nature, copy and pasting download links & using other websites images.
It's annoying when they go offline and it's also annoying to see the broken images. Should make it so unless the image is from Imgur or something local, then it's not allowed to be posted. Likewise with the download, or it should have user-uploaded mirrors.
Then the issue of double/triple posting, that would be down to wanting to win a discount code for a forum upgrade. Due to mass copy and pasting, they forget where they get to in a list/folder and often re-post the same null. They then continue to post it anyway without double checking, simply because it's then time lost on posting another leak.