Best way to deal with trolls? On this site and in general!?

How do you win? How do you beat them?

Source: http://www.mmaforum.com/mma-forum-lounge/106333-best-way-deal-trolls-site-general.html

Alex Andrade  Jermaine Andrè  Yoji Anjo  Ao Hailin  Shinya Aoki