The Piratebay proxy websites are used to bypass any ISP block on the web, as stated by Vens. While such action can also be done with a paid generic internet access service or a dedicated internet access program, with the Pirate Bay mirrors there is no need to use a third party service. With the Pirate Bay backbones, it is simply a matter of loading the page in your browser and surfing as usual. You may be wondering what the difference is between using the proxy versus the regular internet access program? Well, if you think about it, there are quite a few differences.
For starters, there are many free services that claim to be pirate bay proxies. But the only thing they have is a fancy looking website with fancy colored backgrounds and an "official" logo. Compared to these free services, the paid ones offer much better security measures. The most popular pirate bay proxies are the ones offering a combination of security along with bypassing any ISP block.