Teamspeak ? Why not good ol' Mumble ? Voice chat seems nice, but what to do when all servers are full and you have 4 x 45 people. I'm aware channels exist and can be created, but is it still a practical idea? Edit: there's a thing here called the Edit button
Some players run some unofficial team speak servers last time I checked (search the forums). I am happy if members want to get together to voice chat (G+ and Skype work great) but at this time I am not interested in supporting an official one (including the moderation)