Безопасен ли pnphpbb.com?

Once you get on this site, it keeps you there. Even if you manage to close your browsers, it will come back on. To get a question answered, you must answer one. I complied and being a certified law clerk from the U.S. I answered a question that I was well informed on. I was told that the response that I gave was not acceptable and to try again. When I attempted to reply again, I received the same message. I then attempted to leave the site and was "kept" there until I had to force a closure of my browser.