The torrents on the site are regularly updated and there does not seem to be any data missing.
The site has been the subject of controversy due to copyright infringement issues and is blocked by several internet service providers in several countries including Denmark, Italy, the United Kingdom, the United States, and India.
The site does not require registration.
You can find the list of kickass proxies in this article to unblock kickass.
For the most part these sites are additionally frowned upon which is why they reoccur.
It meant the birth of the Kickass proxy.