TatySite.net chat is a registered IRC channel, where you can get using either mIRC or a client/gate.
TatySite.net gate:
http://eng.tatysite.net/chat/
mIRC channel address:
Server: irc.wondernet.nu
Port: 6667
Channel: #tatu
irc://irc.wondernet.nu:6667/tatu
This chat room isn't specifically for TatySite.net members only, thus you are welcome to invite whoever you wish by providing the addresses above.
To discuss chat technical issues on the forum, please:
Weekly Chat Thread
You are welcome to join the chat!