Haxxor World was a site with one of the most annoying banners ever. It was rumored to be allied with GSCentral (Rune did have their banner in his signature after all).
Ironically, this site is also said to be a part of the GameFAQ's and NSider coalition that took out GSCentral's forums a while ago..
Like many great sites this site met it's fate and was taken offline with a farewell message posted on the forums.