I would agree with Garrick that GZ is not the place. Town Hall meetings would be a good reason for VOIP. Perhaps a special Temple of sorts, a Safe Zone, or an underground cavern that is unaligned with any kingdom or GZ. Underground would be accessible, yet not involved in any events on the 'surface'. Im not sure about more than one zone, VOIP would probably get /ooc quickly and maybe best reserved for /meetings . For access besides /meet the Talking House sounds good, a small house in an out of the way area that teleports to the bigger 'conference room' so players can use it without a /meet.