While laws vary by country, streaming pirated content is generally considered illegal in regions like the EU and the US. In the EU, court rulings have established that streaming pirated media is as legally problematic as downloading it.
The site itself generally does not host the files. Instead, it provides links to content uploaded by users to third-party file-hosting services. Putlocke
How to Popup Block Putlocker on Internet Explorer - Tutorial While laws vary by country, streaming pirated content
The Motion Picture Association of America (MPAA) and major film studios have identified Putlocker as a "rogue cyberlocker service" for providing access to copyrighted material without authorization. While laws vary by country
To cover operation costs and generate profit, Putlocker relies heavily on advertisements. These often include aggressive pop-ups and redirects to third-party sites.