Shutter - You haven't seen voip service

Shutter free Internet calls and other free Internet calls are not the same, not to register to send how many minutes of free phone charges, but to download and install the shutter software client, register as a user after landing the shutter software, keep the shutter online state, you can get points, no other operations, and then use the points you get to exchange for free Internet calls and even various prizes! In addition, you can also earn shutter points by participating in shutter events and participating in sponsor events! How long you can call for free depends on how long you hang up, you can hang up as long as you want, hang up as long as you call!