The WiiSpeak microphone is ten bucks cheaper when purchased with Animal Crossing: City Folk. Obviously, it works with Animal Crossing, but it will also work with The Conduit, with the new version of the Opera browser, and on its own via the Wii Speak Channel. Of course, more compatible games will follow. We hope.
It occurs to us that even people who like Animal Crossing, but don't necessarily care about catching up with their friends while fishing or shaking trees may have interest in the WiiSpeak mic for other stuff. Are you in that group? Did you pick up the Animal Crossing WiiSpeak bundle with no intention of using the two items together?