The xat wiki is the official source of information for xat.com related content. Head here for a list of editors and translators who contribute to the wiki.
The wiki was founded in 2007 with the aim of letting users permanently share their xat-related knowledge with those who may seek it. It received a good number of hits. Not many users actually contributed, but devoted their time to vandalizing. Later it was closed, only to re-open in 2008 with only certain users given the ability to edit/add articles. To other users, it's view-only.
The wiki has currently over 25 translators contributing to make it more multilingual.