We have just been approached by Team NoClan - a guild who plays Guild Wars among other titles. They have recently setup a TeamSpeak server which is free for everyone to use. They included channels for PVPing, Questing, Tradeing, or just kicking back and hanging out.
They are not requiring donations or payment - it is 100% free and public server for all to use.
If you are in need of a TeamSpeak server you can access it at IP: 188.8.131.52:8768