What is 3rd Dimensia?

Additional Dimension Adjustment Disorder, or 3rd Dimensia, is a neurological disorder that strikes the brain and brain related functions of those acclimatizing to improved spatial situations.
The telltale symptoms of 3rd Dimensia are befuddlement, soreness, pain, frustration, inactivity, uselessness, confoundation, inability to do things, fear of rooms, and death. Many people ignore these symptoms or mistake them for other, more popular disorders. Left undiagnosed, 3rd Dimensia can cause serious damage to you, your life, or your home.

Up until the late 1990s, it was commonly thought that 3rd Dimensia was only a disorder for patients dealing with 2-to-3-dimensional crossover. But today, scientists and doctors know better. Be warned: 3rd Dimensia does not discriminate. It can strike anyone at anytime.

UPDATE: Apparently, as one might discover by drilling down sufficiently deeply into the site, it's a front for gametap.com, some kind of Time-Warner-funded service that lets you play classic emulated console games.

Two-dimensional ones. Okay, I guess that makes sense...