Black Zero is a new community of hacking, coding, and lock picking enthusiasts. The site offers over 50 interactive challenges in several different categories to teach users about all aspects of security and gain points along the way. There is also a forum, downloads, tutorials, and videos to help you out on the site.
I think that the site was not unique. Most challenges were in a modified form known and fairly simple except the lockpicking-challs. Therefore, it is pretty no matter what happens to the page.