Roxas tends to Flail profusely whenever she makes a typo on AIM chat. This often leads to other people typoing in amusement. This phenomenon has become known as the Roxas Typo Disease or RTD.

It has also been noted that typos seem to happen more frequently even when Roxas is simply present in the chatroom. This is widely accepted as a symptom of RTD.

Famous new words arisen from RTD are:

Quwarion ("question." How did she manage that?)

Traimatix (traumatic, though it sounds more like a prescription drug)

Ganfirls (fangirls)

Lings (lungs, not the plural of the character from Fullmetal Alchemist)

Interneta

Hurst

Sira (surprisingly spawned from "sir," not "Sora")

Belieg

Weask

Since the original Roxas left the game, the mantle of Chronic Typoist has been passed to Setine, and this syndrome renamed to "Setine Typo Disease" because the acronym amuses us.