I think T-Games should have a Discord server. It's the best of Teamspeak and Skype put together, and a hell of a lot better than the Live! Chat we got going on in the Wiki and an account isn't required to join a server, although it would be useful for privileges, etc. And it works in the web browser.
Like Teamspeak, you can make separate channels for different purposes like private staff chats and stuffs.
Like Skype, you can edit your messages and the functionality is free.
There's also private text chat, and soon private voice chat.