Chatting ingame is great. Especially for blitzes. It gets around the two-turn to send a message thing that Dominions has in it.
We have discussed teamspeak, skype, and ventrilo for voice chatting.
For typed chats Id rather stick with the IRC channels we have now. Such as <a href="irc://irc.gamesurge.net/#dominions" target="_blank">irc://irc.gamesurge.net/#dominions</a> which works for many people without having to download something new. Its an old standard internet thing.
If the next upgrade of this software includes a chat feature then we might switch to that.
Gandalf Parker