www.area53site.com is a website in Grand Theft Auto IV. It is hosted by a former radio DJ, last updated on December 28, 1999, 11:38 pm. He believed in the Y2K catastrophe so he built an underground bunker and planned to live in it for ten years.
The last update time of 11:38 pm is possibly a refrence to the movie, THX 1138.
This website can also be accessed through www.whattheydonotwantyoutoknow.com (it's the only ad that appears there).