It's just that they use a large number of mirrors to keep the site accessible. We all have our favorite torrent site these days. In the top five torrent sites in the world, RARBG
is constantly updated with the best, most up-to-date proxy sites and that's the reason it's still accessible today, no matter what. Of course, it hasn't been without its fair share of critics and its fair share of legislation. As laws regarding copyrighted material become even stricter, more and more countries are trying to remove sites like RARBG from the Internet altogether. So far, they have failed to do so; torrent is still thriving, and that's thanks to the tireless efforts of the managers of such Web sites who fight the system diligently.